First slide

Collisions

Question

A body of mass M moves with velocity v and collides elastically with a another body of mass m (M>>m) at rest then the velocity of body of mass m is

Moderate

A

v
B

2v
C

v/2
D

Zero

Solution

When target is very light and at rest then after head on elastic collision it moves with double speed of projectile i.e., the velocity of body of mass m will be 2v.

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