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Chapter 01 1. Since 1983 the standard meter has been defined in terms of which of the following? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by krypton-86 c. distance from the Earth's equator to the North Pole d. the distance light travels in a certain fraction of a second e. None of the above ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 10/30/2023 2:07 AM DATE MODIFIED: 10/30/2023 2:08 AM 2. Since 1967 the standard definition for the second has been based on which of the following? a. characteristic frequency of the cesium-133 atom b. average solar day c. sidereal day d. Greenwich Civil Time e. None of the above ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 10/30/2023 2:08 AM DATE MODIFIED: 10/30/2023 2:09 AM

Chapter 01 3. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two? a. length and force b. power and force c. length and time d. force and time ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:11 AM DATE MODIFIED: 11/1/2023 2:12 AM 4. The prefixes which are abbreviated f, d, and T represent which of the following? a. 10–30, 10–2, and 1024 b. 10–15, 102, and 1024 c. 10–15, 10–1, and 1012 d. 10–13, 102, and 1024 e. 10–30, 10–1, and 10–2 ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:13 AM DATE MODIFIED: 11/1/2023 2:18 AM

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Chapter 01 5. In 1983 the standard meter was redefined to what it is currently. What was the previous definition from 1960 based on? a. specific alloy bar housed at Sevres, France b. wavelength of light emitted by certain krypton atoms c. distance from the Earth’s equator to the North Pole d. the distance light travels in a certain fraction of a second ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:18 AM DATE MODIFIED: 11/1/2023 2:19 AM 6. The ratio T/m of the prefixes M and m has what value? a. 1016 b. 1014 c. 1015 d. 1017 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:19 AM DATE MODIFIED: 11/1/2023 2:21 AM

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Chapter 01 7. A city uses 6.8 × 109 gallons of water every day. How many gallons per minute must be pumped from the reservoir to meet the city's water needs? a. 4.7E+6 b. 7.9E+4 c. 2.8E+8 d. 6.8E+9 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement NOTES: New item DATE CREATED: 11/1/2023 2:21 AM DATE MODIFIED: 11/1/2023 2:23 AM 8. A herd of sheep eats 10 bales of hay every 4 days. If a bale of hay costs $2.85, how much will it cost to feed the sheep hay for one year? a. $912.50 b. $2,600.63 c. $28.50 d. $3,650.00 ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement NOTES: New item DATE CREATED: 11/1/2023 2:23 AM DATE MODIFIED: 11/1/2023 2:25 AM

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Chapter 01 9. Sphere A has a radius of 5.00 cm, and sphere B has a radius of 8.80 cm. What is the difference in volume between the two spheres? a. 2 330 cm3 b. 556 cm3 c. 6 990 cm3 d. 165 cm3 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement NOTES: New item DATE CREATED: 11/1/2023 2:34 AM DATE MODIFIED: 11/1/2023 2:36 AM 10. One mole of ammonia (NH3) has a mass of 17.0 g, and one mole is equal to 6.02 × 1023 molecules. How many hydrogen (H) atoms are in 55.0 g of ammonia? Note that each molecule of ammonia has 3 hydrogen atoms. a. 5.84E+24 b. 1.95E+24 c. 3.07E+25 d. 6.49E+23 ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement NOTES: New item DATE CREATED: 11/1/2023 2:36 AM DATE MODIFIED: 11/1/2023 2:37 AM

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Chapter 01 11. Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration, x is distance, and t is time) a. v/t2 b. vx2 c. v2/t d. at ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:42 AM DATE MODIFIED: 11/1/2023 2:44 AM 12. Which expression is dimensionally consistent with an expression that would yield a value for time−1? (v is velocity, x is distance, and t is time) a. v/x b. v2 /x c. x/t d. v2t ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:44 AM DATE MODIFIED: 11/1/2023 2:46 AM

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Chapter 01 13. If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant, A, has the dimension of which of the following? a. acceleration b. length c. time d. area ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:46 AM DATE MODIFIED: 11/1/2023 2:47 AM 14. The speed of a boat is often given in knots. If a speed of 5 knots were expressed in the SI system of units, the units would be: a. m. b. s. c. m/s. d. kg/s. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:47 AM DATE MODIFIED: 11/1/2023 2:48 AM

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Chapter 01 15. If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally correct? a. t = x/v b. a = v2/x c. v = a/t d. t2 = 2x/a ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:48 AM DATE MODIFIED: 11/1/2023 2:49 AM 16. Areas always have dimensions ____ while volumes always have dimensions ____. a. m2, m3 b. L2, L3 c. Both a and b are correct. d. No answer is correct because of the "always." ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:49 AM DATE MODIFIED: 11/1/2023 2:50 AM

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Chapter 01 17. When SI units are plugged into an equation, it is found that the units balance. Which of the following can we expect to be true for this equation? a. The equation will be dimensionally correct. b. The equation will be dimensionally correct except sometimes in cases when the right-hand side of the equation has more than one term. c. The equation will not be dimensionally correct. d. All constants of proportionality will be correct. ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:50 AM DATE MODIFIED: 11/1/2023 2:51 AM 18. Suppose an equation relating position, x, to time, t, is given by x = bt3 + ct4, where b and c are constants. The dimensions of b and c are respectively: a. T3, T4. b. 1/T3, 1/T4. c. L/T3, L/T4. d. L2⋅T3, L2⋅T4. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:52 AM DATE MODIFIED: 11/1/2023 2:54 AM

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Chapter 01 19. Volume can be measured in units of m3. Which of the following unit combinations also result in volume? a. ft2/m b. cmꞏft c. cm2in. d. m2ꞏcmꞏft ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 2:54 AM DATE MODIFIED: 11/1/2023 2:55 AM 20. Modern electroplaters can cover a surface area of 75.0 m2 with one troy ounce of gold (volume = 1.611 cm3). What is the thickness of the electroplated gold? a. 2.15E–8 m b. 1.07E–8 m c. 1.43E–8 m d. 4.30E–8 m e. None of the above ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:23 AM DATE MODIFIED: 11/1/2023 3:24 AM

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Chapter 01 21. The basic function of an automobile's carburetor is to atomize the gasoline and mix it with air to promote rapid combustion. Assume that 30.0 cm3 of gasoline is atomized into N spherical droplets. Each droplet has a radius of 1.0 × 10−5 m. Find the total surface area of these N spherical droplets. a. 3.0E+4 cm2 b. 1.2E+5 cm2 c. 1.8E+5 cm2 d. 9.0E+4 cm2 e. 1.1E+5 cm2 ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:25 AM DATE MODIFIED: 11/1/2023 3:26 AM 22. On planet Z, the standard unit of length is the foose. Ann the Astronaut is 5.2 feet tall on Earth. She lands on planet Z and is measured to be 88 foosi tall. Her partner Rachael is 92 foosi tall. How tall is Rachael on Earth? a. 5.9 feet b. 5.4 feet c. 5.2 feet d. 5.1 feet e. 5.6 feet ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:26 AM DATE MODIFIED: 11/1/2023 3:27 AM

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Chapter 01 23. A cereal box has the dimensions of 0.14 m × 0.22 m × 0.070 m. If there are 3.28 feet per meter, then what is the volume of the box in cubic feet? a. 7.6E–2 cubic feet b. 2.3E–2 cubic feet c. 2.7E–1 cubic feet d. 3.9E–3 cubic feet e. 1.3E–2 cubic feet ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:28 AM DATE MODIFIED: 11/1/2023 3:29 AM 24. A cement truck can pour 160 cubic yards of cement per hour. Express this in ft3/min. a. 480 ft3/min b. 2.67 ft3/min c. 24.0 ft3/min d. 8.00 ft3/min e. 72.0 ft3/min ANSWER: e POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:29 AM DATE MODIFIED: 11/1/2023 3:30 AM

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Chapter 01 25. A furlong is a distance of 220 yards. A fortnight is a time period of two weeks. A race horse is running at a speed of 6.00 yards per second. What is his speed in furlongs per fortnight? a. 3.30E+4 furlongs/fortnight b. 4.71E+3 furlongs/fortnight c. 3.31E+4 furlongs/fortnight d. 3.33E+4 furlongs/fortnight e. 3.28E+4 furlongs/fortnight ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:30 AM DATE MODIFIED: 11/1/2023 3:32 AM 26. The distance to a hypothetical galaxy is estimated at about 7 × 106 light years. A light year is the distance traveled by light in one year; if the speed of light is 3 × 108 m/s, about how far is it from our galaxy to this hypothetical galaxy? (1 year = 3.15 × 107 s) a. 7E+21 m b. 1E+9 m c. 7E+22 m d. 7E+5 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:32 AM DATE MODIFIED: 11/1/2023 3:33 AM

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Chapter 01 27. Water flows into a swimming pool at the rate of 7.0 gal/min. The pool is 17 ft wide, 32 ft long and 7.0 ft deep. How long does it take to fill? (1 U.S. gallon = 231 cubic inches) a. 34 hours b. 68 hours c. 67 hours d. 136 hours e. 680 hours ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:33 AM DATE MODIFIED: 11/1/2023 3:34 AM 28. When NASA was communicating with astronauts on the Moon, the time from sending on the Earth to receiving on the Moon was 1.28 s. Find the distance from Earth to the Moon. (The speed of radio waves is 3.00 × 108 m/s.) a. 240 000 km b. 384 000 km c. 480 000 km d. 768 000 km ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:34 AM DATE MODIFIED: 11/1/2023 3:35 AM

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Chapter 01 29. The mass of a star is 8.0 × 1030 kg, and the mass of a hydrogen atom is 1.67 × 10−27 kg. If we assume that the star is mostly composed of hydrogen, approximately how many atoms are there in the star? a. 1.3E+4 atoms b. 2.1E–58 atoms c. 4.8E+57 atoms d. 8.0E+30 atoms ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:35 AM DATE MODIFIED: 11/1/2023 3:36 AM 30. The information on a one-gallon paint can is that the coverage, when properly applied, is 440 ft2. One gallon is 231 in3. What is the average thickness of the paint in such an application? a. 3.6E–3 in b. 5.3E–1 in c. 4.4E–2 in d. 1.3E–2 in e. 1.6E–1 in ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:37 AM DATE MODIFIED: 11/1/2023 3:38 AM

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Chapter 01 31. The distance from New York to London is 3 470 miles. If a plane takes 6.0 hours to fly this distance, what is the plane’s average speed in kilometers per hour? 1 mile = 1.609 km. a. 2 200 b. 620 c. 390 d. 930 ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:38 AM DATE MODIFIED: 11/1/2023 3:39 AM 32. On planet Q the standard unit of volume is called the guppy. Space travelers from Earth have determined that one liter = 39.0 guppies. How many guppies are in 230 liters? a. 8 970 guppies b. 9 010 guppies c. 8 740 guppies d. 9 200 guppies e. 8 930 guppies ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.1 Standards of Measurement DATE CREATED: 11/1/2023 3:39 AM DATE MODIFIED: 11/1/2023 3:40 AM

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Chapter 01 33. Which one of the choices below represents the preferred practice regarding significant figures when adding the following: 15.9 + 14 + 77.68 + 6.898? a. 114.4780 b. 114.478 c. 114.48 d. 114.5 e. 114 ANSWER: e POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:40 AM DATE MODIFIED: 11/1/2023 3:42 AM 34. Which one of the choices below represents the preferred practice regarding significant figures when multiplying the following: 15.0 × 5.6 × 2.33? a. 200 b. 195.720 c. 195.72 d. 195.7 e. 196 ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:42 AM DATE MODIFIED: 11/1/2023 3:43 AM

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Chapter 01 35. Calculate (0.83 + 0.049)(4.4 × 103), keeping only significant figures. a. 3 900 b. 3 868 c. 3 886 d. 4 000 ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:43 AM DATE MODIFIED: 11/1/2023 3:44 AM 36. The length and width of a standard sheet of paper is measured, and then the area is found by calculation to be 91.50 in.2. The number of significant figures in the width measurement must be at least a. 1. b. 2. c. 3. d. 4. e. 5. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:44 AM DATE MODIFIED: 11/1/2023 3:45 AM

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Chapter 01 37. How many significant figures does the number 3 600 have? a. 1 b. 2 c. 3 d. 4 e. One cannot tell with certainty when the number is written in the given form, but it will be one of the other given answers. ANSWER: e POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:45 AM DATE MODIFIED: 11/1/2023 3:46 AM 38. Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 6 and 7 cm, how many significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm positions? a. 2 b. 3 c. 4 d. 5 e. more than 5 ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:47 AM DATE MODIFIED: 11/1/2023 3:47 AM

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Chapter 01 39. The number 0.03 has how many significant figures? a. 2 b. 3 c. 5 d. 6 e. 7 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:47 AM DATE MODIFIED: 11/1/2023 3:49 AM 40. Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 8 and 9 cm, how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions? a. 0 b. 2 c. 3 d. 4 e. more than 4 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:49 AM DATE MODIFIED: 11/1/2023 3:50 AM

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Chapter 01 41. Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit. If you are measuring an object with length between 25 and 53 cm, how many significant figures will result if you only use the part of the meter stick between the 3-cm and 85-cm positions? a. 1 b. 2 c. 3 d. 4 e. more than 4 ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:50 AM DATE MODIFIED: 11/1/2023 3:51 AM 42. There are other ways of expressing uncertainty besides significant figures. For example, suppose a quantity is known to have a value between 20.4 and 20.0, and our best estimate of the value is midrange at 20.2. We could write the number as 20.2 +/− 0.2 and say that the number has a 1% uncertainty. We would also say it has 3 significant figures. If we square a number with 1% uncertainty (i.e., 2 parts in about 200) and 3 significant figures, what results? a. A number with 1% uncertainty and 3 significant figures. b. A number with 2% uncertainty and 3 significant figures. c. A number with 2% uncertainty and 2 significant figures. d. A number with 1% uncertainty and 2 significant figures. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:52 AM DATE MODIFIED: 11/1/2023 3:53 AM

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Chapter 01 43. Multiplying a 2-significant-figure number by a 4-significant-figure number and then dividing the product by a sevensignificant-figure number yields a number with how many significant figures? a. 6/7 b. 1 c. 2 d. 13 e. 8/7 ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:53 AM DATE MODIFIED: 11/1/2023 3:54 AM 44. A rectangular-shaped patio has a base length equal to (24.5 ± 0.2) m and a height equal to (9.3 ± 0.1) m. What is the area of the patio, including its uncertainty? a. 228 ± 4 b. 228 ± 2 c. 228 ± 23 d. 228 ± 6 ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:54 AM DATE MODIFIED: 11/1/2023 3:55 AM

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Chapter 01 45. A marble has a radius of 16 mm. Approximately how many marbles will fit in a cube-shaped container with each side equal to 36 cm? a. 20 b. 510 c. 1 420 d. 80 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:55 AM DATE MODIFIED: 11/1/2023 3:56 AM 46. Approximately how many water molecules are in a lake with a volume of 12 100 km3? A water molecule measures approximately 2.75 × 10¯10 m in length. a. 2E+15 b. 5E+22 c. 4E+14 d. 6E+41 ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:56 AM DATE MODIFIED: 11/1/2023 3:57 AM

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Chapter 01 47. How long has it been that scientists have accepted that the nucleus of the atom consists of neutrons and protons? Think of your answers in terms of order of magnitude. a. about a decade b. about a century c. about a thousand years d. since Aristotle ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:57 AM DATE MODIFIED: 11/1/2023 3:58 AM 48. For which of the values below is x > x7? a. x = –2.0 b. x = 0 c. x = 1.0 d. x = 2.0 e. x = 4.0 ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:58 AM DATE MODIFIED: 11/1/2023 3:59 AM

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Chapter 01 49. Assume everyone in the United States consumes one soft drink in an aluminum can every two days. If there are 270 million Americans, about how many tons of aluminum need to be recycled each year if each can weighs 1/15 pound and one ton = 2 000 pounds? a. 450 000 tons b. 1.6 million tons c. 3.3 million tons d. 0.82 million tons e. 410 000 tons ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 3:59 AM DATE MODIFIED: 11/1/2023 4:00 AM 50. A physics class in a large lecture hall has 150 students. The total mass of the students is about ____ kg. a. 104 b. 105 c. 106 d. 107 e. 108 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 4:01 AM DATE MODIFIED: 11/1/2023 4:02 AM

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Chapter 01 51. An apartment has 1 100 ft2 of floor space. What is the approximate volume of the apartment? a. 102 ft3 b. 103 ft3 c. 104 ft3 d. 105 ft3 e. 106 ft3 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 4:02 AM DATE MODIFIED: 11/1/2023 4:04 AM 52. A room in a house has a floor area of 110 ft2. Which of the following is most likely the approximate volume of the room? a. 3 m3 b. 30 m3 c. 300 m3 d. 3 000 m3 e. 10 m3 ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.2 Measurement Uncertainty and Estimation DATE CREATED: 11/1/2023 4:04 AM DATE MODIFIED: 11/2/2023 10:26 AM

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Chapter 01 53. What is the distance between the two polar coordinates (2.0, 30°) and (9.0, 145°)? a. 6.0 b. 10.0 c. 9.8 d. 9.2 ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review NOTES: New item DATE CREATED: 11/1/2023 4:06 AM DATE MODIFIED: 11/1/2023 4:07 AM 54. Amir drives his ATV from coordinates (5.0 km, 25°) directly to (25.0 km, 45°) in 45 minutes. What is the ATV's speed? a. 0.5 km/h b. 20.4 km/h c. 27.2 km/h d. 34.0 km/h ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review NOTES: New item DATE CREATED: 11/1/2023 4:08 AM DATE MODIFIED: 11/1/2023 4:09 AM

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Chapter 01 55. A mosquito flies diagonally from a corner at the floor of a rectangular room, with coordinates (0, 0, 0) to the opposite corner at the ceiling, with coordinates (5.5, 3.75, h) m at a rate of 0.8 m/s. If it takes the mosquito 11 seconds to make the direct flight, what is h? a. 5.8 m b. 6.7 m c. 8.5 m d. 8.3 m ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review NOTES: New item DATE CREATED: 11/1/2023 4:09 AM DATE MODIFIED: 11/1/2023 4:11 AM 56. Which point is nearest the x-axis? a. (1, 7) b. (–3, –6) c. (–7, 5) d. (–6, –4) e. (2, 3) ANSWER: e POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:11 AM DATE MODIFIED: 11/1/2023 4:13 AM

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Chapter 01 57. If point A is located at coordinates (–10, 7) and point B is located at coordinates (8, –8), what is the distance from A to B if the units of the coordinated system are meters? a. 549 m b. 23 m c. 28 m d. 33 m e. 26 m ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:13 AM DATE MODIFIED: 11/1/2023 4:14 AM 58. Each edge of a cube has a length of 12.7 cm. What is the length of a diagonal of the cube going through the center of the cube? a. 24.0 in. b. 22.0 in. c. 25.5 in. d. 20.5 in. e. 8.7 in. ANSWER: e POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:14 AM DATE MODIFIED: 11/1/2023 4:15 AM

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Chapter 01

59. Two wires support a post, with dimensions as shown in the figure. If d = 14 m, what is the value of x? a. 7.5 m b. 6.5 m c. 18.3 m d. 5.2 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review NOTES: New item DATE CREATED: 11/1/2023 4:15 AM DATE MODIFIED: 11/2/2023 10:28 AM 60. A surveyor stands 100 m from the base of a building, and uses a transit to determine that the angle of elevation to the building’s roof is 19.0°. If the transit height is 0.80 m, what is the height of the building? a. 94.6 m b. 95.4 m c. 35.2 m d. 34.4 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review NOTES: New item DATE CREATED: 11/1/2023 4:18 AM DATE MODIFIED: 11/1/2023 4:19 AM Copyright Cengage Learning. Powered by Cognero.

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Chapter 01 61. Suppose the interior angles of a triangle are φ1, φ2, and φ3, with φ1 > φ2 > φ3. Which side of the triangle is the shortest? a. The side opposite φ1. b. The side opposite φ2. c. The side opposite φ3. d. More information is needed unless the triangle is a right triangle. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:19 AM DATE MODIFIED: 11/1/2023 4:21 AM 62. A right triangle has sides 10 m, 5 m, and 11 m. The smallest angle of this triangle is nearest a. 32°. b. 27°. c. 22°. d. 63°. e. Not attainable since this is not a right triangle. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:22 AM DATE MODIFIED: 11/1/2023 4:23 AM

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Chapter 01 63. If ϕ = 90° − θ, what is the value of sin2 ϕ + sin2 θ? a. 0 b. 1 c. −1 d. The answer depends on θ. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:23 AM DATE MODIFIED: 11/2/2023 10:30 AM 64. A triangle has sides of length 7 cm and 11 cm. If the triangle is a right triangle, which of the following could be the length of the third side, to the nearest centimeter? a. 11 cm b. 8 cm c. 16 cm d. 17 cm e. 7 cm ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:26 AM DATE MODIFIED: 11/1/2023 4:27 AM

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Chapter 01 65. A train slowly climbs a 400-m mountain track which is at an angle of 8.0° with respect to the horizontal. How much altitude does it gain? a. 55.7 m b. 200 m c. 60.7 m d. 396 m e. 400 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 4:27 AM DATE MODIFIED: 11/1/2023 4:28 AM 66. Consider the sine of any angle between 30° and 40°. If the angle were doubled, what would happen to the sine of the angle? a. It would double. b. It would more than double. c. It would increase but be less than double. d. In different cases, it could do any of the above. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 6:00 AM DATE MODIFIED: 11/1/2023 6:01 AM

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Chapter 01 67. Consider the cosine of any angle between 35° and 40°. If the angle were doubled, what would happen to the cosine of the angle. a. It would halve. b. It would decrease to less than half its original value. c. It would decrease but be more than half its original value. d. In different cases, it could do any of the above. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 6:01 AM DATE MODIFIED: 11/1/2023 6:02 AM 68. If θ and φ are each first quadrant angles, which of the following must be true if sin θ = cos φ? a. θ + φ = π rad b. θ + φ = 90° c. θ – φ = π/2 rad d. θ = φ ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 6:02 AM DATE MODIFIED: 11/1/2023 6:03 AM

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Chapter 01 69. A high fountain of water is in the center of a circular pool of water. You walk the circumference of the pool and measure it to be 190 meters. You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain. It is 55°. How high is the fountain? a. 25 m b. 53 m c. 86 m d. 43 m e. 48 m ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.3 Math Review DATE CREATED: 11/1/2023 6:03 AM DATE MODIFIED: 11/1/2023 6:04 AM 70. Which of the following is not a vector quantity? a. mass b. acceleration c. displacement d. velocity ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:04 AM DATE MODIFIED: 11/1/2023 6:06 AM

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Chapter 01 71. Which type of quantity is characterized by both magnitude and direction? a. scalar b. vector c. trigonometric d. algebraic variable ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:06 AM DATE MODIFIED: 11/1/2023 6:07 AM 72. Which of the following is an example of a vector quantity? a. velocity b. temperature c. volume d. mass ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:07 AM DATE MODIFIED: 11/1/2023 6:08 AM

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Chapter 01 73. When we subtract a velocity vector from another velocity vector, the result is a. another velocity. b. an acceleration. c. a displacement. d. a scalar. ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:09 AM DATE MODIFIED: 11/1/2023 6:10 AM 74. When we add a displacement vector to another displacement vector, the result is a. a velocity. b. an acceleration. c. another displacement. d. a scalar. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:10 AM DATE MODIFIED: 11/1/2023 6:11 AM

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Chapter 01 75. Vector

points north, and vector

points east. If

−

, then vector points

a. north of east. b. south of east. c. north of west. d. south of west. ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:11 AM DATE MODIFIED: 11/1/2023 6:27 AM 76. When three vectors are added graphically and form a closed triangle, the largest enclosed angle between any two of the vectors cannot be greater than a. 60°. b. 90°. c. 180°. d. No maximum exists. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:20 AM DATE MODIFIED: 11/1/2023 6:21 AM

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Chapter 01 77. Vector

is 2 m long, and vector

is 5 m long. The length of the sum of the vectors must be

a. 6 m. b. 7 m. c. 13 m. d. some value from 3 m to 7 m. e. 3 m. ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:21 AM DATE MODIFIED: 11/1/2023 6:28 AM 78. Two ships set sail from the same port. Ship A sails a distance of 35.0 kilometers in a direction 30.0° north of east, and drops anchor. Ship B sails due south. When ship B is 30.0 km from the port, how far apart are the ships? a. 46.1 km b. 56.3 km c. 65.0 km d. 75.9 km ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors NOTES: New item DATE CREATED: 11/1/2023 6:29 AM DATE MODIFIED: 11/1/2023 6:30 AM

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Chapter 01 79. Terrence goes for a walk. He walks 2.0 km north, then turns and walks 4.0 km south of east. What is his displacement vector? Take east to be in the + -direction and north to be in the + -direction. a. (2.0

+ 4.0 ) km

b. (2.8

– 0.8 ) km

c. (4.8

+ 5.7 ) km

d. (5.7

– 2.8 ) km

ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors NOTES: New item DATE CREATED: 11/1/2023 6:30 AM DATE MODIFIED: 11/1/2023 6:36 AM 80. Vector A is 2.0

+ 3.5

. Vector B is –3.1 – 3.1 . What is A + 2B?

a. –4.2 + –2.7 b. –1.1 – 0.4 c. 5.1 + 6.6 d. 8.2 + 9.7 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors NOTES: New item DATE CREATED: 11/1/2023 6:36 AM DATE MODIFIED: 11/1/2023 6:40 AM

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Chapter 01 81. An airplane takes off due west at an angle of 16.0° with the horizontal. When the airplane is at a vertical height of 400 ft, what is its displacement vector? Let east be the +x direction and +z be upwards. a. (385 + 400 ) ft b. (–110 – 400 ) ft c. (717 – 400 ) ft d. (–1 390 + 400 ) ft ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors NOTES: New item DATE CREATED: 11/1/2023 6:40 AM DATE MODIFIED: 11/1/2023 6:43 AM 82. Vectors

, and

have magnitudes 6, 11, and 22. When these vectors are added, what is the least possible

magnitude of their addition? a. 25 b. 15 c. 5 d. 3 ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:44 AM DATE MODIFIED: 11/2/2023 10:47 AM

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Chapter 01 83. Of vectors with lengths 5 m, 3 m, and 4 m, which has the greatest magnitude x component? a. the one with length 5 m b. the one with length 3 m c. the one with length 4 m d. It could be any of the three. ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:49 AM DATE MODIFIED: 11/1/2023 6:50 AM 84. Vector

is 5 m long and vector

is 12 m long. The length of the sum of the vectors must be:

a. some value from 7 m to 17 m. b. 13 m. c. 17 m. d. 8 m. ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:50 AM DATE MODIFIED: 11/1/2023 6:52 AM

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Chapter 01 85. A taxicab moves five blocks due north, five blocks due east, and another three blocks due north. Assume all blocks are of equal size. How far is the taxi from its starting point? a. 13 blocks b. 9.4 blocks c. 9.2 blocks d. 8.6 blocks ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:52 AM DATE MODIFIED: 11/1/2023 6:53 AM 86. Find the sum of the following two vectors: (i) 50 units due east and (ii) 100 units 30° south of west. a. 100 units 30° south of west b. 62 units 54° south of west c. 87 units 60° south of west d. 62 units 15° south of west ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:53 AM DATE MODIFIED: 11/1/2023 6:54 AM

Page 43

Chapter 01 87. Vector 1 is 7 units long and is at 70°. Vector 2 is 5 units long and is at 155°. Vector 3 is 3 units long and is at 225°. Which vector has equal-magnitude components? a. Vector 1 b. Vector 2 c. Vector 3 d. None of the vectors has equal-magnitude components. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:55 AM DATE MODIFIED: 11/1/2023 6:56 AM 88. A student adds two vectors with magnitudes of 200 and 70. Which one of the following is the only possible choice for the magnitude of their sum? a. 100 b. 280 c. 200 d. 70 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:56 AM DATE MODIFIED: 11/1/2023 6:57 AM

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Chapter 01 89. Arvin the Ant travels 30 cm eastward, then 25 cm northward, and finally 10 cm westward. In what direction is Arvin now in with respect to his starting point? a. 59° N of E b. 29° N of E c. 29° N of W d. 51° N of E ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 6:57 AM DATE MODIFIED: 11/1/2023 6:59 AM 90. Vector

is 3.0 units in length and points along the positive x axis; vector

is 5.0 units in length and points along a

direction 150° from the positive x axis. What is the magnitude of the resulting vector when vectors

and

are

added? a. 7.0 b. 6.7 c. 2.8 d. 2.1 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors NOTES: Revised item DATE CREATED: 11/1/2023 6:59 AM DATE MODIFIED: 11/1/2023 7:01 AM

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Chapter 01 91. Vector

is 3.00 units in length and points along the positive x axis; vector

is 5.00 units in length and points along a

direction 150° from the positive x axis. What is the direction of their sum with respect to the positive x axis? a. 62.0° b. 13.0° c. 118° d. 103° ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 7:02 AM DATE MODIFIED: 11/1/2023 7:04 AM 92. I walk six miles in a straight line in a direction north of east, and I end up four miles north and several miles east. How many degrees north of east have I walked? a. 19° b. 42° c. 60° d. 71° ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 1.4 Vectors DATE CREATED: 11/1/2023 7:04 AM DATE MODIFIED: 11/1/2023 7:05 AM

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Chapter 01 93. Note the expression: y = x2. Which statement is most consistent with this expression? a. If y doubles, then x quadruples. b. y is greater than x. c. If x doubles, then y doubles. d. If x doubles, then y quadruples. ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: Additional Problems DATE CREATED: 11/1/2023 7:05 AM DATE MODIFIED: 11/1/2023 7:06 AM 94. Note the expression: y = A/x3. Which statement is most consistent with this expression? a. y is less than A. b. If x is halved, y is multiplied by eight. c. If x is doubled, y is multiplied by a factor of 8. d. y is greater than x. ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: Additional Problems DATE CREATED: 11/1/2023 7:07 AM DATE MODIFIED: 11/1/2023 7:08 AM

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Chapter 01 95. A circle has an area of 3.0 m2. A second circle has double the radius of the first. The area of the second circle is ____ times that of the first. a. 0.8 b. 2.0 c. 4.0 d. 6.0 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: Additional Problems DATE CREATED: 11/1/2023 7:08 AM DATE MODIFIED: 11/1/2023 7:09 AM 96. Doubling the radius of a sphere results in increasing its volume by a factor of a. 2. b. 4. c. 8. d. 8π. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: Additional Problems DATE CREATED: 11/1/2023 7:10 AM DATE MODIFIED: 11/1/2023 7:10 AM

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Chapter 02 1. A change in a physical quantity w having initial value wi and final value wf is given by which of the following? a. wi − wf b. wf − wi c. (wf + wi)/2 d. none of the above ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 12:51 AM DATE MODIFIED: 11/2/2023 10:59 AM 2. Displacement is which of the following types of quantities? a. vector b. scalar c. magnitude d. dimensional ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:18 AM DATE MODIFIED: 11/2/2023 1:19 AM

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Chapter 02 3. A truck moves 80.0 m east, then moves 140.0 m west, and finally moves east again a distance of 80.0 m. If east is chosen as the positive direction, what is the truck's resultant displacement? a. 20.0 m b. –20.0 m c. 300.0 m d. –300.0 m e. 140.0 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:19 AM DATE MODIFIED: 11/2/2023 1:20 AM 4. Which of the following is not a vector quantity? a. temperature b. velocity c. acceleration d. displacement ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:21 AM DATE MODIFIED: 11/2/2023 1:22 AM

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Chapter 02 5. In one-dimensional motion, the average speed of an object that moves from one place to another and then back to its original place has which of the following properties? a. It is positive. b. It is negative. c. It is zero. d. It can be positive, negative, or zero. ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:22 AM DATE MODIFIED: 11/2/2023 1:23 AM 6. In one-dimensional motion where the direction is indicated by a plus or minus sign, the average velocity of an object has which of the following properties? a. It is positive. b. It is negative. c. It is zero. d. It can be positive, negative, or zero. ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:24 AM DATE MODIFIED: 11/2/2023 1:25 AM

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Chapter 02 7. An object moves 10 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the sign associated with the average velocity of the object? a. + b. − c. 0 (no sign) d. any of the above ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:25 AM DATE MODIFIED: 11/2/2023 1:26 AM 8. An object moves 10.0 m east in 10.0 s and then returns to its starting point taking an additional 40.0 s. If west is chosen as the positive direction, what is the average speed of the object? a. 0.4 m/s b. –0.4 m/s c. 10.0 m/s d. 0 m/s e. –10.0 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:26 AM DATE MODIFIED: 11/2/2023 1:28 AM

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Chapter 02 9. A bird, accelerating from rest at a constant rate, experiences a displacement of 22 m in 10 s. What is the average velocity? a. 1.2 m/s b. 2.2 m/s c. 2.4 m/s d. 0 m/s e. 0.5 m/s ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:28 AM DATE MODIFIED: 11/2/2023 1:29 AM 10. A cheetah can run at approximately 100 km/h and a gazelle at 80.0 km/h. If both animals are running at full speed, with the gazelle 50.0 m ahead, how long before the cheetah catches its prey? a. 9.0 s b. 14 s c. 18 s d. 4.5 s e. 21 s ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleratio DATE CREATED: 11/2/2023 1:29 AM DATE MODIFIED: 11/2/2023 1:30 AM

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Chapter 02 11. A cheetah can maintain its maximum speed of 96.0 km/hr for 26.0 seconds. What minimum distance must a gazelle running 85.0 km/hr be ahead of the cheetah to escape? a. 96 m b. 79 m c. 40 m d. 73 m e. 67 m ANSWER: b POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:31 AM DATE MODIFIED: 11/2/2023 11:03 AM 12. Jeff throws a ball straight up. For which situation is the vertical velocity zero? a. on the way up b. at the top c. on the way back down d. none of the above ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:32 AM DATE MODIFIED: 11/2/2023 1:33 AM

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Chapter 02 13. A railroad train travels forward along a straight track at 90.0 m/s for 1 000 m and then travels at 70.0 m/s for the next 1 000 m. What is the average velocity? a. 79.3 m/s b. 78.8 m/s c. 83.8 m/s d. 75.8 m/s e. 81.5 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:33 AM DATE MODIFIED: 11/2/2023 1:34 AM 14. The distance of the Earth from the Sun is 93 000 000 miles. If there are 3.15 × 107 s in one year, find the speed of the Earth in its orbit about the Sun. a. 9.28 miles/s b. 18.6 miles/s c. 27.9 miles/s d. 37.2 miles/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:34 AM DATE MODIFIED: 11/2/2023 1:35 AM

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Chapter 02 15. A ball is thrown vertically upwards at 19.0 m/s. For its complete trip (up and back down to the starting position), its average velocity is: a. 19.0 m/s. b. 9.5 m/s. c. 4.8 m/s. d. 14.3 m/s e. not given. ANSWER: e POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:36 AM DATE MODIFIED: 11/2/2023 1:37 AM 16. Changing the positive direction in a reference frame to the opposite direction does not change the sign of which of the following quantities? a. velocity b. average velocity c. speed d. displacement ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:37 AM DATE MODIFIED: 11/2/2023 1:38 AM

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Chapter 02 17. Consider the magnitude of the average speed, vavg, speed, mag, and the magnitude of the average velocity, vavg, velocity, mag, for the same trip. Which of the following is always true? a. vavg, speed, mag = vavg, velocity, mag b. vavg, speed, mag ≥ vavg, velocity, mag c. vavg, speed, mag ≤ vavg, velocity, mag d. none of the above ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:38 AM DATE MODIFIED: 11/2/2023 1:40 AM 18. A European sports car dealer claims that his car will accelerate at a constant rate from rest to 100 km/h in 8.00 s. If so, what is the acceleration? (Hint: First convert speed to m/s.) a. 3.47 m/s2 b. 6.94 m/s2 c. 5.21 m/s2 d. 10.4 m/s2 e. 8.68 m/s2 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:40 AM DATE MODIFIED: 11/2/2023 1:41 AM

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Chapter 02 19. A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 8.00 s. What is the speed after the first 4.00 s of acceleration? (Hint: First convert the speed to m/s.) a. 27.8 m/s b. 41.7 m/s c. 20.9 m/s d. 13.9 m/s e. 6.95 m/s ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:42 AM DATE MODIFIED: 11/2/2023 1:43 AM 20. The value of an object's acceleration may be characterized in equivalent words by which of the following? a. displacement b. rate of change of displacement c. velocity d. rate of change of velocity ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:43 AM DATE MODIFIED: 11/2/2023 1:44 AM

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Chapter 02 21. A 50.0-g ball traveling at 22.0 m/s is bounced off a brick wall and rebounds at 21.0 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 2.50 ms, what is the average acceleration of the ball during this time interval? a. 1.72E+4 m/s2 b. 3.44E+4 m/s2 c. 8.60E+3 m/s2 d. 1.72E+1 m/s2 e. 4.30E+1 m/s2 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:44 AM DATE MODIFIED: 11/2/2023 1:45 AM 22. The slope of the acceleration vs. time curve represents a. the velocity. b. the rate of change of acceleration. c. the rate of change of displacement. d. the area under the position vs. time curve. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:46 AM DATE MODIFIED: 11/2/2023 1:46 AM

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Chapter 02 23. Starting from rest, a car accelerates down a straight road with constant acceleration a for a time t, then the direction of the acceleration is reversed, (i.e., it is −a), and the car comes to a stop in an additional time t, the time for the whole trip being 2t. At what time, or times, is the average velocity of the car for the trip equal to its instantaneous velocity during the trip? a. There is no such time. b. It is at the halfway point at t. c. This occurs at 2 times, 0.5t and 1.5t. d. This occurs at 2 times, 0.707t and 1.293t. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:47 AM DATE MODIFIED: 11/2/2023 1:47 AM 24. In which of the following cases is the displacement's magnitude half the distance traveled? a. 10 steps east followed by 3 steps west b. 28 steps east followed by 14 steps west c. 6 steps east followed by 24 steps west d. 12 steps east followed by 4 steps west e. 5 steps east followed by 25 steps west ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:48 AM DATE MODIFIED: 11/2/2023 1:49 AM

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Chapter 02 25. Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is acceleration, x is distance, and t is time) a. v/t2 b. vx2 c. v2/t d. at ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:49 AM DATE MODIFIED: 11/2/2023 1:50 AM 26. If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally correct? a. t = x/v b. a = v2/x c. v = a/t d. t2 = 2x/a ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:50 AM DATE MODIFIED: 11/2/2023 1:51 AM

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Chapter 02 27. A ball is pushed downhill with an initial velocity of 3.0 m/s. The ball rolls down a hill with a constant acceleration of 1.6 m/s2. The ball reaches the bottom of the hill in 6.0 s. What is the ball’s velocity at the bottom of the hill? a. 10 m/s b. 13 m/s c. 16 m/s d. 17 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:51 AM DATE MODIFIED: 11/2/2023 1:53 AM 28. An object moves at a constant velocity of 12 m/s to the southwest for an interval of 20 s. Halfway through this interval, what is the magnitude of its instantaneous velocity? a. It can be any value from 0 to 24 m/s. b. 6 m/s c. 12 m/s d. More information is needed. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:52 AM DATE MODIFIED: 11/2/2023 1:53 AM

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Chapter 02 29. A car is moving along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, where does the position where the instantaneous speed equals the average speed occur for the interval from A to B? a. midway between A and B b. closer to A than to B c. closer to B than to A d. Any of the answers could be correct depending on the original speed. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:54 AM DATE MODIFIED: 11/2/2023 1:55 AM 30. A car is moving in the positive direction along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, when does the position where the average speed equals the instantaneous speed occur during the time interval from A to B? Assume the time interval is T. a. T/2 from the start of the interval b. before T/2 from the start of the interval c. after T/2 from the start of the interval d. It depends on the speed at the start of the time interval. ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:55 AM DATE MODIFIED: 11/2/2023 1:56 AM

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Chapter 02 31. Suppose a particle is moving along a straight line with a speed v for a time t, then stops for a time t, and then resumes moving along the original direction with speed v for time t. What has been the average speed of the particle for the total time period 3t? a. v b. 2v/3 c. 1.5v d. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:56 AM DATE MODIFIED: 11/2/2023 1:59 AM 32. A rock is rolled in the sand. It starts at 5.0 m/s, moves in a straight line for a distance of 6.0 m, and then stops. What is the magnitude of the average acceleration? a. 2.1 m/s2 b. 4.2 m/s2 c. 5.4 m/s2 d. 6.2 m/s2 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.1 Displacement, Velocity, and Acceleration DATE CREATED: 11/2/2023 1:59 AM DATE MODIFIED: 11/2/2023 2:00 AM

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Chapter 02 33. On a position-versus-time graph, the slope of the straight line joining two points on the plotted curve that are separated in time by the interval Δt, is which of the following quantities? a. average steepness b. average velocity c. instantaneous velocity d. average acceleration ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:00 AM DATE MODIFIED: 11/2/2023 2:01 AM 34. An x vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the velocity of the ball is zero. We can be positive that at t = 5 s, a. the slope of the curve is non-zero. b. the ball has stopped. c. the acceleration is constant. d. the curve is at x = 0, t = 0. ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:01 AM DATE MODIFIED: 11/2/2023 2:02 AM

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Chapter 02 35. A v vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the acceleration of the ball is zero. We know that at t = 5 s, a. the slope of the curve is non-zero. b. the velocity of the ball is not changing. c. the curve is not crossing the time axis. d. the curve is at v = 0, t = 0. ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:02 AM DATE MODIFIED: 11/2/2023 2:03 AM 36. On a position-time graph for a particle, suppose the plot starts at some positive position and as the time goes on the curve gets steeper and steeper while curving upwards. Which of the following must be true? a. The speed of the particle is constant. b. The acceleration of the particle is constant. c. The speed of the particle is decreasing. d. The acceleration of the particle is positive. ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:03 AM DATE MODIFIED: 11/2/2023 2:04 AM

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Chapter 02 37. On a velocity-time graph for a particle, suppose the plot starts at some positive velocity and then follows a straight line to zero at a later time. Which of the following must be true about a position vs. time graph for this same time interval? a. The curve will start at a positive position value and follow a straight line to zero at the later time. b. The curve will rise steeply at first and as time goes on will level out approaching its highest position value at the later time. c. The curve will drop steeply at first and as time goes on will approach its lowest position value at the later time d. The curve will start at the zero of position and follow a straight line to its highest position at the later time. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:05 AM DATE MODIFIED: 11/2/2023 2:06 AM 38. An object moves along the x axis, with its position given by the function x(t) = ½ t3. Which of the following can be obtained from a graph of x vs. t? a. The velocity of the object at any instant in time b. The displacement of the object during a specified time interval c. The speed of the particle at any instant in time d. The average velocity of the object during as specified time interval e. All of the above ANSWER: e POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs NOTES: New item DATE CREATED: 11/2/2023 2:07 AM DATE MODIFIED: 11/2/2023 2:09 AM

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Chapter 02 39. A strobe photograph shows equally-spaced images of a car moving along a straight road. If the time intervals between images is constant, which of the following cannot be positive? a. the speed of the car b. the average velocity of the car c. the acceleration of the car d. the direction of motion of the car ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:10 AM DATE MODIFIED: 11/2/2023 2:10 AM 40. A strobe photograph of a car moving along a straight road shows the interval between each successive image to be diminishing. If the direction of motion of the car is taken as positive, which of the following is/are negative? a. the speed of the car b. the average velocity of the car c. the average acceleration of the car d. all of the above ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.2 Motion Diagrams and Graphs DATE CREATED: 11/2/2023 2:11 AM DATE MODIFIED: 11/2/2023 2:11 AM

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Chapter 02 41. A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant acceleration of 1.7 m/s2. The ball reaches the bottom of the hill in 7.0 s. What is the ball's velocity at the bottom of the hill? a. 15 m/s b. 13 m/s c. 16 m/s d. 19 m/s ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:12 AM DATE MODIFIED: 11/2/2023 2:13 AM 42. A cart is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.4 m/s2. What is the magnitude of the cart's displacement during the first 5.0 s of its motion? a. 35 m b. 85 m c. 55 m d. 11 m e. 17 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:13 AM DATE MODIFIED: 11/2/2023 2:14 AM

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Chapter 02 43. A vehicle designed to operate on a drag strip accelerates from zero to 34 m/s while undergoing a straight-line path displacement of 48 m. What is the vehicle's acceleration if its value may be assumed to be constant? a. 9 m/s2 b. 6.0 m/s2 c. 12 m/s2 d. 18 m/s2 e. 24 m/s2 ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:14 AM DATE MODIFIED: 11/2/2023 2:15 AM 44. When a drag strip vehicle reaches a velocity of 65.0 m/s, it begins a negative acceleration by releasing a drag chute and applying its brakes. While reducing its velocity back to zero, its acceleration along a straight-line path is a constant −7.10 m/s2. What displacement does it undergo during this deceleration period? a. 595 m b. 4.58 m c. 2 110 m d. 298 m e. 9.15 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:15 AM DATE MODIFIED: 11/2/2023 2:16 AM

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Chapter 02 45. A bird, accelerating from rest at a constant rate, experiences a displacement of 25 m in 15 s. What is the final velocity after 15 s? a. 2.5 m/s b. 1.7 m/s c. 3.3 m/s d. 3.8 m/s e. zero ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:17 AM DATE MODIFIED: 11/2/2023 2:17 AM 46. A bird, accelerating from rest at a constant rate, experiences a displacement of 25 m in 12 s. What is its acceleration? a. 0.18 m/s2 b. 0.35 m/s2 c. 0.44 m/s2 d. 0.26 m/s2 e. 0.53 m/s2 ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:18 AM DATE MODIFIED: 11/2/2023 2:19 AM

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Chapter 02 47. A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/h in 6.00 s. What distance will the sports car travel during the 6.00-s acceleration period? (Hint: First convert speed to m/s.) a. 41.7 m b. 58.3 m c. 83.3 m d. 167 m e. 125 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:19 AM DATE MODIFIED: 11/2/2023 2:20 AM 48. An automobile driver puts on the brakes and decelerates from 35.0 m/s to zero in 11.0 s. What distance does the car travel? a. 193 m b. 97 m c. 241 m d. 290 m e. 145 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:20 AM DATE MODIFIED: 11/2/2023 2:22 AM

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Chapter 02 49. A drag racer starts from rest and accelerates at 8.0 m/s2 for the entire distance of 300 m. What is the velocity of the race car at the end of the run? a. 83 m/s b. 69 m/s c. 52 m/s d. 35 m/s e. 59 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:22 AM DATE MODIFIED: 11/2/2023 2:23 AM 50. A Cessna aircraft has a lift-off speed of 135 km/h. What minimum constant acceleration does this require if the aircraft is to be airborne after a take-off run of 260 m? a. 2.70 m/s2 b. 1.35 m/s2 c. 3.38 m/s2 d. 5.41 m/s2 e. 2.03 m/s2 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 2:23 AM DATE MODIFIED: 11/2/2023 2:24 AM

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Chapter 02 51. If the displacement of an object is given in SI units by Δx = −3t + 4t 2, at t = 2 s its velocity and acceleration are, respectively: a. positive, positive. b. positive, negative. c. negative, negative. d. negative, positive ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:22 AM DATE MODIFIED: 11/2/2023 3:23 AM 52. In the case of constant acceleration, the average velocity equals the instantaneous velocity: a. at the beginning of the time interval. b. at the end of the time interval. c. half-way through the time interval. d. three-fourths of the way through the time interval. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:24 AM DATE MODIFIED: 11/2/2023 3:25 AM

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Chapter 02 53. Two students are working on the same constant-acceleration problem involving a car undergoing constant acceleration, having started from rest and after a certain time having traveled a distance of 108 m. The students are to find the average velocity. Both students are required to show their work and round any intermediate answers as well as the final answer properly to 3 significant figures. Each rounded answer is to be used in the next step of calculation as they proceed. For the final answer, Student A uses the formula vavg = (xf – xi)/(tf–ti) getting the result 7.26 m/s, and Student B uses the formula vavg = (v0 + v)/2 getting the result 7.29 m/s. Assuming neither student makes a mistake, which student has the better answer? a. Student A b. Student B c. Under significant figure rounding, both answers are equally as good. d. The described result cannot happen; this is physics after all. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:25 AM DATE MODIFIED: 11/2/2023 12:17 PM 54. A speeding car traveling at a constant velocity of 24 m/s passes a police care initially at rest beside the roadway. If the police car with constant acceleration of 3.0 m/s2 immediately pursues the speeding car, how far down the road does it draw even with the speeding car? a. 190 m b. 290 m c. 380 m d. 770 m ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:26 AM DATE MODIFIED: 11/2/2023 3:27 AM

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Chapter 02 55. A speeding car traveling at a constant velocity of v passes a police car initially at rest beside the roadway. If the police car with constant acceleration of a immediately pursues the speeding car, how long is it before the police car is directly behind the speeding car? a. v/a b. 2v/a c. v/2a d. v2/a ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration NOTES: Revised item DATE CREATED: 11/2/2023 3:27 AM DATE MODIFIED: 11/2/2023 3:29 AM 56. Amanda is standing at the edge of a cliff. She throws a rock vertically upward at speed v0, while at the same time throws a second rock vertically downward at the same speed. How long after the rock thrown downward hits the ground does the rock thrown upwards hit? a. 2v0/g b. v0/g c. d.

ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration NOTES: New item DATE CREATED: 11/2/2023 3:29 AM DATE MODIFIED: 11/2/2023 3:34 AM

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Chapter 02 57. A baseball player throws a ball straight up into the air. At a height of 3.00 m above the release point, the ball is moving at 1.25 m/s. What was the ball’s initial speed? a. 7.56 m/s b. 7.77 m/s c. 57.2 m/s d. 60.4 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration NOTES: New item DATE CREATED: 11/2/2023 3:34 AM DATE MODIFIED: 11/2/2023 3:35 AM 58. Starting from rest, a car accelerates down a straight road with constant acceleration a 1 for a time t1, then the acceleration is changed to a different constant value a 2 for an additional time t2. The total elapsed time is t1 + t2. Can the equations of kinematics be used to find the total distance traveled? a. No, because this is not a case of constant acceleration. b. Yes, use (a 1 + a 2)/2 as the average acceleration and the total time in the calculation. c. Yes, use a 1 + a 2 as the acceleration and the average time (t1 + t2)/2 in the calculation. d. Yes, break the problem up into 2 problems, one with the conditions for the first time interval and the other with the conditions for the second time interval, noting that for the second time interval the initial velocity is that from the end of the first time interval. When done, add the distances from each of the time intervals. ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:35 AM DATE MODIFIED: 11/2/2023 3:37 AM

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Chapter 02 59. A ball rolls down an incline, starting from rest. If the total time it takes to reach the end of the incline is T, how much time has elapsed when it is halfway down the incline? a. 0.5 T b. < 0.5 T c. > 0.5 T d. More information is needed. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.3 One-Dimensional Motion with Constant Acceleration DATE CREATED: 11/2/2023 3:37 AM DATE MODIFIED: 11/2/2023 3:38 AM 60. An object is dropped from a height. Once it is moving, which of the following statements is true, at least at one point? a. Its velocity is more than its acceleration. b. Its velocity is less than its acceleration. c. Its velocity is the same as its acceleration. d. Its velocity is never equal to its acceleration. ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely Falling Bodies DATE CREATED: 11/2/2023 3:38 AM DATE MODIFIED: 11/2/2023 3:39 AM

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Chapter 02 61. A rock is thrown straight down with an initial velocity of 14.3 m/s from a cliff. What is the rock's displacement after 2.0 s? (Acceleration due to gravity is 9.80 m/s2.) a. 81 m b. 48 m c. 38 m d. 22 m e. 31 m ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:40 AM DATE MODIFIED: 11/2/2023 3:41 AM 62. A rock is thrown straight up with an initial velocity of 25.0 m/s. What maximum height will the rock reach before starting to fall downward? (Take acceleration due to gravity as 9.80 m/s2.) a. 39.9 m b. 15.9 m c. 63.8 m d. 31.9 m e. 47.8 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:41 AM DATE MODIFIED: 11/2/2023 3:42 AM

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Chapter 02 63. A rock is thrown straight up with an initial velocity of 17.6 m/s. What time interval elapses between the rock's being thrown and its return to the original launch point? (Acceleration due to gravity is 9.80 m/s2.) a. 3.60 s b. 1.80 s c. 2.70 s d. 3.06 s e. 3.96 s ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:42 AM DATE MODIFIED: 11/2/2023 3:44 AM 64. Two objects of different mass are released simultaneously from the top of a 20-m tower and fall to the ground. If air resistance is negligible, which statement best applies? a. The greater mass hits the ground first. b. Both objects hit the ground together. c. The smaller mass hits the ground first. d. No conclusion can be made with the information given. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:44 AM DATE MODIFIED: 11/2/2023 3:45 AM

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Chapter 02 65. A baseball catcher throws a ball vertically upward and catches it in the same spot when it returns to his mitt. At what point in the ball's path does it experience zero velocity and non-zero acceleration at the same time? a. midway on the way up b. at the top of its trajectory c. the instant it leaves the catcher's hand d. the instant before it arrives in the catcher's mitt ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:45 AM DATE MODIFIED: 11/2/2023 3:46 AM 66. A baseball is released at rest from the top of the Washington Monument. It hits the ground after falling for 5.85 s. What was the height from which the ball was dropped? (g = 9.80 m/s2 and assume air resistance is negligible) a. 1.88 × 102 m b. 1.68 × 102 m c. 1.38 × 102 m d. 3.36 × 102 m ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:46 AM DATE MODIFIED: 11/2/2023 3:47 AM

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Chapter 02 67. A rock, released at rest from the top of a tower, hits the ground after 3.5 s. What is the speed of the rock as it hits the ground? (g = 9.8 m/s2 and air resistance is negligible) a. 34 m/s b. 17 m/s c. 44 m/s d. 24 m/s ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:47 AM DATE MODIFIED: 11/2/2023 3:48 AM 68. Omar throws a rock down with speed 12.5 m/s from the top of a tower. The rock hits the ground after 1.50 s. What is the height of the tower? (air resistance is negligible) a. 24.0 m b. 21.0 m c. 30.0 m d. 54.0 m e. 45.0 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:49 AM DATE MODIFIED: 11/2/2023 3:50 AM

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Chapter 02 69. Gwen releases a rock at rest from the top of a 40-m tower. If g = 9.8 m/s2 and air resistance is negligible, what is the speed of the rock as it hits the ground? a. 28 m/s b. 14 m/s c. 20 m/s d. 40 m/s e. 780 m/s ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:50 AM DATE MODIFIED: 11/2/2023 3:51 AM 70. John throws a rock down with speed 11 m/s from the top of a 25-m . If g = 9.8 m/s2 and air resistance is negligible, what is the rock's speed just as it hits the ground? a. 19 m/s b. 25 m/s c. 610 m/s d. 22 m/s e. 12 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 3:51 AM DATE MODIFIED: 11/2/2023 12:21 PM

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Chapter 02 71. Human reaction time is usually about 0.18 s. If your lab partner holds a ruler between your finger and thumb and releases it without warning, how far can you expect the ruler to fall before you catch it? The nearest value is a. 32 cm. b. 88 cm. c. 1.6 cm. d. 180 cm. e. 16 cm. ANSWER: e POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:19 AM DATE MODIFIED: 11/2/2023 6:20 AM 72. At the top of a cliff 100 m high, Raoul throws a rock upward with velocity 15.0 m/s. How much later should he drop a second rock from rest so both rocks arrive simultaneously at the bottom of the cliff? a. 8.08 s b. 3.31 s c. 5.02 s d. 1.78 s e. 0.89 s ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:21 AM DATE MODIFIED: 11/2/2023 6:22 AM

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Chapter 02 73. Maria throws two stones from the top edge of a building with a speed of 22 m/s. She throws one straight down and the other straight up. The first one hits the street in a time t1. How much later is it before the second stone hits? a. 5.5 s b. 4.5 s c. 3.5 s d. 6.5 s e. Not enough information is given to work this problem. ANSWER: b POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:22 AM DATE MODIFIED: 11/2/2023 6:23 AM 74. Mt. Everest is more than 8 000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 8 000-m elevation? (Ignore air resistance.) a. 396 m/s b. 120 m/s c. 1 200 m/s d. 12 000 m/s ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:23 AM DATE MODIFIED: 11/2/2023 6:24 AM

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Chapter 02 75. A basketball player can jump 1.6 m off the hardwood floor. With what upward velocity did he leave the floor? a. 5.8 m/s b. 2.8 m/s c. 5.4 m/s d. 5.6 m/s e. 11 m/s ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:24 AM DATE MODIFIED: 11/2/2023 6:25 AM 76. A water , launched from the ground, rises vertically with acceleration of 25 m/s2 for 2.0 s when it runs out of "fuel." Disregarding air resistance, how high will the rocket rise? a. 305 m b. 356 m c. 178 m d. 130 m e. 50 m ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:25 AM DATE MODIFIED: 11/2/2023 6:26 AM

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Chapter 02 77. A parachutist jumps out of an airplane and accelerates with gravity to a maximum velocity of 68.6 m/s in 7.00 seconds. She then pulls the parachute cord and after a 4.00-second constant deceleration, descends at 10.5 m/s for 60.0 seconds, reaching the ground. From what height did the parachutist jump? a. 1.03E+3 m b. 7.88E+2 m c. 1.19E+3 m d. 1.66E+3 m e. 1.43E+3 m ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:27 AM DATE MODIFIED: 11/2/2023 6:28 AM 78. A ball is thrown vertically upwards at 24.5 m/s. For its complete trip (up and back down to the starting position), its average speed is a. 18.4 m/s. b. 12.3 m/s. c. 24.5 m/s. d. 6.1 m/s. e. not given. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:28 AM DATE MODIFIED: 11/2/2023 6:29 AM

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Chapter 02 79. A ball of relatively low density is thrown upwards. Because of air resistance the acceleration while traveling upwards is −10.8 m/s2. On its trip downward the resistance is in the opposite direction, and the resulting acceleration is −8.8 m/s2. When the ball reaches the level from which it was thrown, how does its speed compare to that with which it was thrown? a. It is greater than the original speed upward. b. It is the same as the original speed upward. c. It is less than the original speed upward. d. Without knowing the original speed, this problem cannot be solved. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 2.4 Freely-Falling Objects DATE CREATED: 11/2/2023 6:29 AM DATE MODIFIED: 11/2/2023 6:30 AM

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Chapter 03 1. A hiker walks 200 m west and then walks 100 m north. In what direction is her resulting displacement? a. north b. west c. northwest d. None of the answers is correct. ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 6:40 AM DATE MODIFIED: 11/2/2023 6:41 AM 2. In a two-dimensional Cartesian coordinate system the x-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function, with respect to the angle between vector and x-axis? a. sine b. cosine c. tangent d. cotangent ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:50 AM DATE MODIFIED: 11/2/2023 8:51 AM

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Chapter 03 3. In a two-dimensional Cartesian coordinate system the y-component of a given vector is equal to that vector's magnitude multiplied by which trigonometric function, with respect to the angle between vector and y-axis? a. sine b. cosine c. tangent d. cotangent ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:51 AM DATE MODIFIED: 11/2/2023 8:52 AM 4. In a two-dimensional Cartesian system, the x-component of a vector is known, and the angle between vector and xaxis is known. Which operation is used to calculate the magnitude of the vector? (taken with respect to the xcomponent) a. dividing by cosine b. dividing by sine c. multiplying by cosine d. multiplying by sine ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:52 AM DATE MODIFIED: 11/2/2023 8:53 AM

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Chapter 03 5. A string attached to an airborne kite is maintained at an angle of 44.0° with the horizontal. If a total of 160 m of string is reeled in while bringing the kite back to the ground, what is the horizontal displacement of the kite in the process? (Assume the kite string doesn't sag.) a. 111 m b. 80.0 m c. 31.7 m d. 115 m e. 155 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:53 AM DATE MODIFIED: 11/2/2023 8:54 AM 6. A jogger runs halfway around a circular path with a radius of 60.0 m. What, respectively, are the magnitude of the displacement and the distance jogged? a. 60.0 m, 188 m b. 120 m, 188 m c. 0 m, 377 m d. 120 m, 377 m e. 60.0 m, 377 m ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:54 AM DATE MODIFIED: 11/2/2023 8:55 AM

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Chapter 03 7. A mouse starts out in a corner of a room, and runs across the floor according to the following displacements: d 1: 1.2 + 0.4 m d 2: 0.2 m – 0.8 m What is the magnitude of the total displacement of the mouse's position? a. 1.5 m b. 2.6 m c. 1.0 m d. 1.8 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.1 Displacement DATE CREATED: 11/2/2023 8:55 AM DATE MODIFIED: 11/6/2023 1:14 AM 8. An object, initially moving in the negative x-direction, is subjected to a change in velocity in the positive y-direction. If the resulting velocity vector is drawn from the origin, into which quadrant does this vector point? a. 1st b. 2nd c. 3rd d. None, since the object is now moving in the y-direction. ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration DATE CREATED: 11/2/2023 8:58 AM DATE MODIFIED: 11/2/2023 8:59 AM

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Chapter 03 9. A car is initially moving at 20 m/s east, and a little while later it is moving at 10 m/s north. Which of the following best describes the orientation of the average acceleration during this time interval? a. northeast b. northwest c. west d. north of west ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration DATE CREATED: 11/2/2023 8:59 AM DATE MODIFIED: 11/2/2023 9:00 AM 10. An object moves at a constant velocity of 12 m/s to the southwest for an interval of 30 s. Halfway through this interval, what is the magnitude of its instantaneous velocity? a. It can be any value from 0 to 24 m/s. b. 12 m/s c. 6 m/s d. More information is needed. e. 24 m/s ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration DATE CREATED: 11/2/2023 9:00 AM DATE MODIFIED: 11/2/2023 9:01 AM

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Chapter 03 11. A startled deer runs 520 m at 20.0° north of east for half a minute, then turns and runs 380 m at 55.0° north of west for 15.0 seconds and stops. What is the average velocity of the deer during this time? a. 14.3 m/s b. 12.4 m/s c. 20.0 m/s d. 36.1 m/s ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration NOTES: New item DATE CREATED: 11/2/2023 9:01 AM DATE MODIFIED: 11/2/2023 9:02 AM 12. A car is initially traveling west at 25 mph, and makes a turn north. As the car finishes the turn, its velocity is 20 mph north. It takes 3.5 seconds to complete the turn. What is the average acceleration of the car while it is turning, in mph/s? Let east be the positive-x direction and north be the positive-y direction. a. –7.1 + 5.7 b. 7.1 – 5.7 c. 5.7 – 7.1 d. –5.7 + 7.1 ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration NOTES: New item DATE CREATED: 11/3/2023 7:27 AM DATE MODIFIED: 11/3/2023 7:31 AM

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Chapter 03 13. A car’s initial velocity is 50.0 km/h in the direction 60.0° north of east, and its final velocity is 70.0 km/h in the direction 40.0° south of east. If the time period for this journey is 30.0 minutes, what is the magnitude of the car’s average acceleration? a. 186 km/h/h b. 240 km/h/h c. 92.8 km/h/h d. 3.94 km/h/h ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.2 Velocity, Speed, and Acceleration NOTES: New item DATE CREATED: 11/3/2023 7:32 AM DATE MODIFIED: 11/3/2023 7:33 AM 14. John throws a baseball from the outfield from shoulder height, at an initial velocity of 41.5 m/s at an initial angle of 40.0° with respect to the horizontal. The ball is in its trajectory for a total interval of 5.00 s before the third baseman catches it at an equal shoulder-height level. (Assume air resistance negligible.) What is the ball's horizontal displacement? a. 159 m b. 267 m c. 174 m d. zero e. 495 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:34 AM DATE MODIFIED: 11/6/2023 1:18 AM

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Chapter 03 15. A baseball thrown from the outfield is released from shoulder height at an initial velocity of 28.3 m/s at an initial angle of 30.0° with respect to the horizontal. If it is in its trajectory for a total of 4.00 s before being caught by the third baseman at an equal shoulder-height level, what is the ball's net vertical displacement during its 4.00-s trajectory? a. 98.0 m b. 9.80 m c. 10.2 m d. zero e. 20.4 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:35 AM DATE MODIFIED: 11/3/2023 7:37 AM 16. A baseball thrown from the outfield is released from shoulder height at an initial velocity of 29.1 m/s at an initial angle of 30.0° with respect to the horizontal. What is the maximum vertical displacement that the ball reaches during its trajectory? a. 10.8 m b. 21.6 m c. 32.4 m d. 14.4 m e. 28.8 m ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:51 AM DATE MODIFIED: 11/3/2023 7:52 AM

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Chapter 03 17. A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at an equal shoulder level) by the catcher. At what point is the ball's speed at a minimum? (air resistance is negligible) a. just after leaving the center fielder's hand b. just before arriving at the catcher's mitt c. at the top of the trajectory d. speed is constant during entire trajectory ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:53 AM DATE MODIFIED: 11/3/2023 7:55 AM 18. A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point is the magnitude of the acceleration at a minimum? (air resistance is negligible) a. just after leaving the center fielder's hand b. just before arriving at the catcher's mitt c. at the top of the trajectory d. acceleration is constant during entire trajectory ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:55 AM DATE MODIFIED: 11/3/2023 7:56 AM

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Chapter 03 19. A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at shoulder level) by the catcher. At what point does the magnitude of the vertical component of velocity have its minimum value? (air resistance is negligible) a. just after leaving the center fielder's hand b. just before arriving at the catcher's mitt c. at the top of the trajectory d. magnitude of vertical component of velocity is constant ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:57 AM DATE MODIFIED: 11/3/2023 7:58 AM 20. A helicopter is traveling at 50.0 m/s at a constant altitude of 150 m over a level field. If a wheel falls off the helicopter, with what speed will it hit the ground? (g = 9.8 m/s2 and air resistance negligible) a. 63 m/s b. 55 m/s c. 74 m/s d. 54 m/s ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:58 AM DATE MODIFIED: 11/3/2023 7:59 AM

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Chapter 03 21. A ball is rolled horizontally off a table with an initial speed of 0.24 m/s. A stopwatch measures the ball's trajectory time from table to the floor to be 0.36 s. What is the height of the table? (g = 9.8 m/s2 and air resistance is negligible) a. 0.72 m b. 0.55 m c. 0.016 m d. 0.64 m e. 0.65 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 7:59 AM DATE MODIFIED: 11/3/2023 8:00 AM 22. A ball is rolled horizontally off a table with an initial speed of 0.24 m/s. A stop watch measures the ball's trajectory time from table to the floor to be 0.20 s. How far away from the table does the ball land? (g = 9.8 m/s2 and air resistance is negligible) a. 0.24 m b. 0.048 m c. 0.39 m d. 0.15 m e. 0.47 m ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:00 AM DATE MODIFIED: 11/3/2023 8:02 AM

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Chapter 03 23. A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 12 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 4.8 s. What is the height of the cliff? (g = 9.8 m/s2 and air resistance is negligible) a. 140 m b. 110 m c. 84 m d. 29 m ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:02 AM DATE MODIFIED: 11/3/2023 8:03 AM 24. A stone is thrown at an angle of 30° above the horizontal from the top edge of a cliff with an initial speed of 8.0 m/s. A stop watch measures the stone's trajectory time from top of cliff to bottom to be 5.9 s. How far out from the cliff's edge does the stone travel horizontally? (g = 9.8 m/s2 and air resistance is negligible) a. 41 m b. 27 m c. 300 m d. 130 m ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:03 AM DATE MODIFIED: 11/3/2023 8:04 AM

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Chapter 03 25. A bridge that was 10.4 m long has been washed out by the rain several days ago. How fast must a car be going to successfully jump the stream, if we neglect air resistance? Although the road is level on both sides of the bridge, the road on the far side is 3.00 m lower than the road on this side. a. 18.8 m/s b. 13.3 m/s c. 10.9 m/s d. 26.6 m/s e. 14.3 m/s ANSWER: b POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:04 AM DATE MODIFIED: 11/3/2023 8:05 AM 26. A rifle is aimed horizontally toward the center of a target 120 m away. If the bullet strikes 11.2 cm below the center, what was the velocity of the bullet? (Ignore air friction.) a. 23 m/s b. 1 120 m/s c. 32 m/s d. 790 m/s e. 400 m/s ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:05 AM DATE MODIFIED: 11/3/2023 8:07 AM

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Chapter 03 27. A quarterback takes the ball from the line of scrimmage, runs backward for 12 yards, then sideways parallel to the line of scrimmage for 18 yards. He then throws a 47-yard forward pass straight downfield perpendicular to the line of scrimmage. The receiver is tackled immediately. How far is the football displaced from its original position? a. 39 yards b. 47 yards c. 31 yards d. 62 yards e. 66 yards ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:13 AM DATE MODIFIED: 11/3/2023 8:14 AM 28. A track star in the broad jump goes into the jump at 12.0 m/s and launches himself at 26.0° above the horizontal. How long is he in the air before returning to Earth? (g = 9.8 m/s2) a. 0.5 s b. 1.1 s c. 2.1 s d. 2.2 s e. 1.2 s ANSWER: b POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:14 AM DATE MODIFIED: 11/3/2023 8:15 AM

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Chapter 03 29. Superguy is flying at treetop level near Paris when he sees the Eiffel Tower elevator start to fall (the cable snapped). His x-ray vision tells him Lois LaTour is inside. If Superguy is 1.00 km away from the tower, and the elevator falls from a height of 230 m, how long does Superguy have to save Lois, and what must be his average speed? a. 4.84 s, 206 m/s b. 8.39 s, 119 m/s c. 6.85 s, 150 m/s d. 9.69 s, 103 m/s e. 3.43 s, 292 m/s ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion NOTES: Revised item DATE CREATED: 11/3/2023 8:15 AM DATE MODIFIED: 11/6/2023 1:23 AM 30. A ball is launched from ground level at 25 m/s at an angle of 31° above the horizontal. How far does it go before it is at ground level again? a. 34 m b. 94 m c. 28 m d. 56 m e. 14 m ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:17 AM DATE MODIFIED: 11/3/2023 8:18 AM

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Chapter 03 31. A baseball leaves the bat with a speed of 47 m/s and an angle of 45° above the horizontal. A 5.0-m-high fence is located at a horizontal distance of 137 m from the point where the ball is struck. Assuming the ball leaves the bat 1.0 m above ground level, by how much does the ball clear the fence? a. 59.7 m b. 47.7 m c. 49.7 m d. 121 m ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion NOTES: Revised item DATE CREATED: 11/3/2023 8:18 AM DATE MODIFIED: 11/6/2023 1:25 AM 32. Wiley Coyote has missed the elusive road runner once again. This time, he leaves the edge of the cliff at 52.4 m/s horizontal velocity. If the canyon is 140 m deep, how far from his starting point at the edge of the cliff does the coyote land? a. 280 m b. 198 m c. 396 m d. 140 m e. 70.0 m ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:19 AM DATE MODIFIED: 11/3/2023 8:20 AM

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Chapter 03 33. A fireman, 57.6 m away from a burning building, directs a stream of water from a fire hose at an angle of 35.2° above the horizontal. If the initial speed of the stream is 42.7 m/s, at what height will the stream of water strike the building? a. 44.2 m b. 13.8 m c. 27.3 m d. 30.8 m e. 36.4 m ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:20 AM DATE MODIFIED: 11/3/2023 8:21 AM 34. The highest mountain on Mars is Olympus Mons, rising 22 000 meters above the Martian surface. If we were to throw an object horizontally off the mountain top, how long would it take to reach the surface? (Ignore atmospheric drag forces and use g Mars = 3.72 m/s2.) a. 1.8 minutes b. 2.4 minutes c. 3.0 minutes d. 0.79 minute ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:21 AM DATE MODIFIED: 11/3/2023 8:22 AM

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Chapter 03 35. Two projectiles are launched at 100 m/s, the angle of elevation for the first being 30° and for the second 60°. Which of the following statements is false? a. Both projectiles have the same acceleration while in flight. b. The second projectile has the lower speed at maximum altitude. c. Both projectiles have the same range. d. All of the above statements are true. ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion NOTES: Revised item DATE CREATED: 11/3/2023 8:22 AM DATE MODIFIED: 11/6/2023 1:26 AM 36. A projectile is thrown horizontally at 11.5 m/s. The projectile hits the ground 0.570 s later. What is the angle of impact the projectile makes with the horizontal ground? a. –29.1° b. –25.9° c. 119° d. –89.7° e. –64.1° ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:23 AM DATE MODIFIED: 11/3/2023 8:24 AM

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Chapter 03 37. A projectile is launched at an angle θ above the horizontal. Three seconds later the projectile is moving the same angle θ below the horizontal. Which of the following (actual values with units, not just algebraic symbols) can be found from the information given? a. the initial vertical component of the projectile’s velocity b. the initial horizontal component of the projectile’s velocity c. the initial magnitude of the velocity d. None of the above since at least one of the above must be given to find the other two values. ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:24 AM DATE MODIFIED: 11/3/2023 8:32 AM 38. A projectile is fired at an angle of elevation of 30°. Neglecting air resistance, what are possible angles in flight between the acceleration vector and the velocity vector? a. 160° and 40° b. 20° and 70° c. 90° and 30° d. none of the above e. 10° and 30° ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:33 AM DATE MODIFIED: 11/3/2023 8:35 AM

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Chapter 03 39. A projectile is launched with speed v at an angle θ, the angle being less than 45º. What other angle would give the same range for this projectile launched at the same speed v? a. 2θ b. 0.5θ c. 90° – θ d. 90º – 0.5θ ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:36 AM DATE MODIFIED: 11/3/2023 8:37 AM 40. Two baseballs are released at the same time. One is dropped from rest and the other is given an initial horizontal velocity. Which of the following is not true? Ignore atmospheric drag. a. Both baseballs hit the ground at the same time. b. Both have the same vertical component of velocity as they reach impact. c. The horizontal component of velocity increases at a greater rate than the vertical component of velocity for both while they are both in the air. d. The horizontally-released ball has a greater speed than the other ball for the whole trip. ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:37 AM DATE MODIFIED: 11/3/2023 8:39 AM

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Chapter 03 41. A projectile is launched at an angle less than 30° and at speed v. Which will increase the projectile’s range more, ignoring atmospheric drag? a. doubling the launch angle b. increasing the speed of launch by 50% c. reducing the mass of the projectile d. launching on February 29th ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:39 AM DATE MODIFIED: 11/3/2023 8:40 AM A stone is thrown with an initial speed of 11.5 m/s at an angle of 50.0 above the horizontal from the top of a 30.0-mtall building. Assume air resistance is negligible, and g = 9.8 m/s2. 42. What is the magnitude of the vertical-velocity component of the rock as it hits the ground? a. 8.81 m/s b. 7.39 m/s c. 25.8 m/s d. 19.3 m/s ANSWER: c POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: item 1 TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:40 AM DATE MODIFIED: 11/3/2023 8:54 AM

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Chapter 03 43. What is the magnitude of the horizontal-velocity component of the rock as it hits the ground? a. 79.5 m/s b. 8.81 m/s c. 58.7 m/s d. 7.39 m/s ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: item 1 TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:55 AM DATE MODIFIED: 11/3/2023 8:56 AM 44. What is the speed of the rock as it hits the ground? a. 11.5 m/s b. 26.8 m/s c. 24.5 m/s d. 16.2 m/s ANSWER: b POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: item 1 TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:56 AM DATE MODIFIED: 11/3/2023 8:57 AM

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Chapter 03 45. What is the magnitude of the horizontal displacement of the rock? a. 3.53 m b. 13.3 m c. 222 m d. 26.1 m ANSWER: d POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False PREFACE NAME: item 1 TOPICS: 3.3 Two-Dimensional Motion DATE CREATED: 11/3/2023 8:57 AM DATE MODIFIED: 11/3/2023 8:58 AM 46. A projectile is fired directly upwards at 49.4 m/s. A second projectile is dropped from rest at some higher elevation at the instant the first projectile is fired and passes the first projectile 3.00 s later. From the frame of reference of the first projectile, what is the velocity of the second projectile as it passes by? a. 64.1 m/s, downward b. 71.5 m/s, downward c. 49.4 m/s, downward d. 34.7 m/s, downward e. 104 m/s, downward ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 8:59 AM DATE MODIFIED: 11/3/2023 9:00 AM

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Chapter 03 47. A jet airliner moving at 470 mph due east moves into a region where the wind is blowing at 110 mph in a direction 30.0° north of east. What is the new velocity and direction of the aircraft? a. 568 mph, 5.56° N of E b. 573 mph, 5.98° N of E c. 520 mph, 9.06° N of E d. 568 mph, 10.4° N of E e. 448 mph, 9.45° N of E ANSWER: a POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:00 AM DATE MODIFIED: 11/3/2023 9:01 AM 48. A boat moves at 10.8 m/s relative to the water. If the boat is in a river where the current is 2.00 m/s, how long does it take the boat to make a complete round trip of 1 100 m upstream followed by a 1 100-m trip downstream? a. 250 s b. 172 s c. 211 s d. 297 s e. 336 s ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:01 AM DATE MODIFIED: 11/3/2023 9:03 AM

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Chapter 03 49. A river flows due east at 2.0 m/s. A boat crosses the 300-m-wide river by maintaining a constant velocity of 15 m/s due north relative to the water. If no correction is made for the current, how far downstream does the boat move by the time it reaches the far shore? a. 80 m b. 30 m c. 25 m d. 40 m e. 50 m ANSWER: d POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:03 AM DATE MODIFIED: 11/3/2023 9:05 AM 50. A boat moves through the water in a river at a speed of 8 m/s relative to the water. The boat makes a trip downstream and then makes a return trip upstream to the original starting place. Which trip takes longer? a. the downstream trip b. the upstream trip c. Both trips take the same amount of time. d. The answer cannot be figured without knowing the speed of the river flow. ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:06 AM DATE MODIFIED: 11/3/2023 9:07 AM

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Chapter 03 51. A boat travels upstream and after one hour has gone 10 km. The boat next travels downstream and after one hour has gone 18 km. If the boat's speed relative to the water is constant, what is the speed of the current in the river? a. 3 km/h b. 4 km/h c. 5 km/h d. 6 km/h e. 7 km/h ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:07 AM DATE MODIFIED: 11/3/2023 9:09 AM 52. Plane A is flying at 440 mph in the northeast direction relative to the Earth. Plane B is flying at 550 mph in the north direction relative to the Earth. What is the speed of Plane B as observed from Plane A? a. 570 mph b. 916 mph c. 392 mph d. 704 mph e. 714 mph ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:09 AM DATE MODIFIED: 11/3/2023 9:10 AM

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Chapter 03 53. Plane A is flying at 350 mph in the northeast direction relative to the Earth. Plane B is flying at 460 mph in the north direction relative to the Earth. What is the direction of motion of Plane B as observed from Plane A? a. 70.7° N of E b. 49.3° N of W c. 40.7° N of W d. 19.3° N of W e. 48.2° N of E ANSWER: c POINTS: 1 DIFFICULTY: 3 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:10 AM DATE MODIFIED: 11/3/2023 9:11 AM 54. A plane is moving due north, directly towards its destination. Its airspeed is 220 mph. A constant breeze is blowing from west to east at 50 mph. How long will it take for the plane to travel 220 miles north? a. one hour b. more than one hour c. less than one hour d. more information is needed e. none of the above ANSWER: b POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:12 AM DATE MODIFIED: 11/3/2023 9:13 AM

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Chapter 03 55. A plane is moving due north, directly towards its destination. Its airspeed is 210 mph. A constant breeze is blowing from west to east at 25.0 mph. In which direction is the plane pointed? a. 6.79° W of N b. 83.2° W of N c. 44.8° W of N d. 83.2° E of N e. 45.2° E of N ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:13 AM DATE MODIFIED: 11/3/2023 9:14 AM 56. A plane is moving due north, directly towards its destination. Its airspeed is 210 mph. A constant breeze is blowing from west to east at 20.0 mph. At what rate is the plane moving north? a. 209 mph b. 211 mph c. 204 mph d. 199 mph e. 194 mph ANSWER: a POINTS: 1 DIFFICULTY: 2 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 3.4 Relative Velocity DATE CREATED: 11/3/2023 9:14 AM DATE MODIFIED: 11/3/2023 9:15 AM

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Chapter 04 1. Which of the following is an example of the type of force that acts at a distance? a. gravitational b. magnetic c. electrical d. all of the above ANSWER: d POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 4.1 Forces and Newton’s First Law DATE CREATED: 10/31/2023 7:47 AM DATE MODIFIED: 10/31/2023 7:59 AM 2. If we know an object is moving at constant velocity, we may assume: a. the net force acting on the object is zero. b. there are no forces acting on the object. c. the object is accelerating. d. the object is losing mass. ANSWER: a POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 4.1 Forces and Newton’s First Law DATE CREATED: 11/1/2023 11:56 PM DATE MODIFIED: 11/1/2023 11:57 PM

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Chapter 04 3. Which of the following expresses a principle, which was initially stated by Galileo and was later incorporated into Newton's laws of motion? a. An object's acceleration is inversely proportional to its mass. b. For every action there is an equal but opposite reaction. c. The natural condition for a moving object is to remain in motion. d. The natural condition for a moving object is to come to rest. ANSWER: c POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 4.1 Forces and Newton’s First Law DATE CREATED: 11/1/2023 11:57 PM DATE MODIFIED: 11/1/2023 11:58 PM 4. What condition must apply to a system's state of motion for it to be regarded as an inertial frame of reference? a. in decreasing velocity b. in constant velocity c. in constant acceleration d. in increasing acceleration ANSWER: b POINTS: 1 DIFFICULTY: 1 QUESTION TYPE: Multiple Choice HAS VARIABLES: False TOPICS: 4.1 Forces and Newton’s First Law DATE CREATED: 11/1/2023 11:59 PM DATE MODIFIED: 11/1/2023 11:59 PM

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