Question

A body of mass m is at rest. Another body of same mass moving with velocity V makes head on elastic collision with the first body. After collision the first body starts to move with velocity
A. V
B. 2V
C. Remain at rest
D. No predictable

Answer 1

Correct Answer - A

Answer 2

In head-on elastic collision if masses are same their velocities get exchanged.

Hence, After collision the first body starts to move with velocity V