Q. 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
A) $v$
B) $2v$
C) $v/2$
D) Zero
Explanation
(b) 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 $2v$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.