Q. A ball of mass $m$ moves with speed $v$ and strikes a wall having infinite mass and it returns with same speed then the work done by the ball on the wall is
A) Zero
B) $mv\ J$
C) $m/v.J$
D) $v/m\ J$
Explanation
(a) The ball rebounds with the same speed. So change in it’s Kinetic energy will be zero $i.e.$ work done by the ball on the wall is zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.