Energy and Force
a. What is the change in momentum during the first 5 sec? b. What is the change in velocity during the first 10 sec? c. What is the acceleration at 4 sec? d. What is the total work done on the cart by the force from 0 - 10 sec? e. What is the displacement after 5 sec? 27. Force is applied in the direction of motion to a 4.00 kg cart on a frictionless surface. The motion is along a straight line and when t = 0, v = 0 and x = 0. look at the following graph:
a. What is the acceleration of the cart when the displacement is 4 m? b. What work was done on the cart between x = 3 m and x = 8 m? c. What is the total work done on the cart between 0 -10 m? d. What is the speed of the cart at x = 10 m? e. What is the impulse given the cart by the force from 1 - 10 m? f. What is the speed at x = 8 m? g. How much time elapsed from when the cart was at x = 8 to when it got to x = 10 m? 28. You are to design an experiment to measure the average force an archer exerts on the bow as she pulls it back prior to releasing the arrow. The mass of the arrow is known. The only lab equipment you can use is a meter stick. a. Give the procedure of the experiment and include a diagram with the quantities to be measured shown. b. Give sample calculations using realistic numbers. c. What is the single most important inherent error in the experiment?
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