Question

mA >mg [20 points) Two carts are moving on a level frictionless table as shown in the overhead view diagram at right. At the instant the carts pass the dashed line on the right, their kinetic energies are the same. The mass of cart A is greater than the mass of cart B. direction of initial velocities A. [3 pts] Is the initial speed of cart B greater than, less than, or equal to the initial speed of cart A? Explain your reasoning в) After each cart passes the dashed line, the same constant force is exerted on each cart. The direction of the force is to the right, and the force is exerted on cach cart until it passes the solid line on the left. After passing the solid line, the carts continue moving at the speed they had when they crossed the line. B. i. [4 pts) Is the magnitude of the acceleration of cart B while it moves between the two lines greater than, less than or equal to the magnitude of the acceleration of cart A? Explain. ii. [5 pts) Is the final kinetic energy of cart B greater than, less than or equal to the final kinetic energy of cart A? Explain your reasoning. C. i. [4 pts) Is the average speed of cart B while it moves between the two lines greater than, less than or equal to the magnitude of the average velocity of cart A? Explain your reasoning. ii. [4 pts) Is the magnitude of the change in momentum of cart B greater than, less than, or equal to the magnitude of the change in momentum of cart A? Explain your reasoning.

Answer 1

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