question_answer

A body of mass m having an initial velocity v, makes head on collision with a stationary body of mass M. After the collision, the body of mass m comes to rest and only the body having mass M moves. This will happen only when             [MP PMT 1995]

A)          \[m>>M\]

B)                       \[m<<M\]

C)          \[m=M\]

D)                       \[m=\frac{1}{2}M\]