Q. In a head on elastic collision of a very heavy body moving at $v$ with a light body at rest, velocity of heavy body after collision is
A) $v$
B) 2$v$
C) Zero
D) $\frac{v}{2}$
Explanation
(a) In a perfectly elastic collision the relative velocity remains unchanged in magnitude but reserved in direction. Therefore , velocity of heavy body after collision is v.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.