Q. A body of mass $m$ having an initial velocity $v$, makes head on collision with a stationary body of mass $M$. After the collision, the body of mass $m$ comes to rest and only the body having mass $M$ moves. This will happen only when
A) $m > \ > M$
B) $m < \ < M$
C) $m = M$
D) $m = \frac{1}{2}\ M$
Explanation
(c) Velocity exchange takes place when the masses of bodies are equal
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.