Q. A billiard ball moving with a speed of $5\ m/s$ collides with an identical ball originally at rest. If the first ball stops after collision, then the second ball will move forward with a speed of
A) $10\ ms^{- 1}$
B) $5\ ms^{- 1}$
C) $2.5\ ms^{- 1}$
D) $1.0\ ms^{- 1}$
Explanation
(b) In elastic head on collision velocities gets interchanged
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.