Question

To demonstrate an elastic collision, a teacher places a tennis ball on the floor. She wants to hit the ball so that the following conditions are satisfied.
1. After collision, the tennis ball should roll with the velocity of the ball that hit it
2. At the instant of collision, the ball that hit the tennis ball should stop.
What ball should she use?
Golf ball, tennis ball, basketball, or bowling ball?

Answer 1

A tennis ball

The two balls need to have the same mass to meet this condition.