Great Car Experiment Wrap Up Questions David Fan 1. What is the relationship between what you felt as a passenger and what the paperclip did? It moved in the same direction that I did 2. The motion you observed in the 5 experiments can be classified into 2 categories. What do you think those categories are? Which experiments showed each? I think these categories are balanced and unbalanced forces. Experiments 2, 4 and 5 showed both. They have balanced forces pushing up and down, so the car stays still vertically, but they have unbalanced forces pushing to the side, allowing it to move horizontally. 3. What is true about the forces acting on an object that is at rest? They are balanced; equal in magnitude, opposite in direction 4. What is true about the forces acting on an object that is traveling at a constant velocity? They are balanced, so there is no change in motion. The force of friction balances out the force of the engine. The car moves because of the unbalanced forces from the acceleration previously. 5. Based on your answer to numbers 2 and 3, above, in general what is the effect of balanced forces (not pressing the pedal or brake) on motion? They donâ€™t affect motion; motion doesnâ€™t change with balanced forces 6. What is true about the forces acting on an object that is speeding up, slowing down, or turning? They are unbalanced; the force of the engine is greater or less than that of the friction of the ground 7. Based on your answer to number 5 above, in general what is the effect of unbalanced forces (pressing the gas pedal or the brake pedal) on motion? They cause the motion to change, or accelerate. The forces of the engine are greater or less than that of the friction of the ground. 8. Complete the following statements: a. Unbalanced forces cause an object to change its velocity b. Unbalanced forces result in a change in motion c. Balanced forces cause an object to keep its velocity d. Balanced forces result in no change in motion 9. As a rule, what does an object that is not moving tend to do? It tends to stay still 10. As a rule, what does an object that is moving tend to do? It tends to move in a single direction at a constant velocity 11. Have you ever been drinking a beverage in the car as your parent accelerated (stepped on the gas)? Based on your observations of the paperclip, what happens and why? Yes. Based on my observations of the paper clip, my body and the drink both moved backward, and I ended up with water on my pants 12. 321 Review
3 Facts I Learned From the Video 1. Things like to keep doing what they’re doing 2. Things with more mass have more inertia 3. It takes as much effort to stop as it does to start moving 2 Answers 1. My period 1 class is very sleepy. Explain how they are like an object with inertia. They’re sluggish, so it’s hard for them to start paying attention. At the same time, once they are paying attention, it’s hard for them to stop paying attention 2. My period 7 class is very energetic. Explain how they are like an object with inertia. They’re energetic, so it’s easy for them to start paying attention. At the same time, it’s also easy for them to stop paying attention due to restlessness, or other factors. 1 Description of the relationship between mass and inertia 1. The more mass something has, the more inertia it has.
Great Car Experiment Wrap Up Questions David Fan