Q. A body of mass m is 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 moves with velocity
A) v
B) Remain at rest
C) 2v
D) Not predictable
Explanation
(a) When two bodies of same mass makes head on elastic collision, and then they interchange their velocities.
So, after collision first body starts to move with velocity v.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.