A body of mass $M$ hits normally a rigid wall with velocity $V$ and bounces back with the same veloc

Question

A body of mass $M$ hits normally a rigid wall with velocity $V$ and bounces back with the same velocity. The impulse experienced by the body is\

Professor PC Thomas Classes · Answer

(c) : Impulse $=$ Change in linear momentum $=M V-(-M V)=2 M V$\