A 0.0500 kg golf ball has been hit due south. It is moving at 20 m/s when it meets a golf cart moving due north at 25 m/s. Assume that the resulting collision is perfectly elastic and reduces the golf cart’s velocity to 24.99 m/s north.

a. What is the velocity of the golf ball just after the collision?

b. What is the change in the golf ball’s momentum?

c. What is the change in the golf ball’s kinetic energy?

Sample Solution

Physics, Velocity, Change in momentum, kinetic Energy