Momentum Practice Problems PSI AP Physics C Name________________________________Multiple Choice 1. A steel ball and a piece of clay have equal mass. They are dropped from the same height on a horizontal steel platform. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the platform. Which object experiences the greater momentum change? (A) the ball (B) the clay (C) Both experience the same momentum change (D) there is no momentum change for either (E) more information is required
2. A car of mass m is moving with a momentum p. How would you represent its kinetic energy in terms of these two quantities?
3. A bowling ball moving with speed v collides head-on with a stationary tennis ball. The collision is elastic, and there is no friction. The bowling ball barely slows down. What is the speed of the tennis ball after the collision?
4. An object with a mass of 2 kg is accelerated from rest. The graph shows the magnitude of the net force as a function of time. At t = 4 s, the object’s velocity would have been closest to which of the following?
5. A 3 kg ball is dropped onto a concrete floor. What is the magnitude of the ball’s change in momentum if its speed just before striking the floor is 7 m/s and its rebound speed is 3 m/s? (A) 10 kg m/s (B) 15 kg m/s (C) 30 kg m/s (D) 50 kg m/s (E) 70 kg m/s