Question

a sledge of mass M has two men each of mass m.first man jumps with some velocity when the sledge starts to move.to stop the movement of sledge the second man jumps with velocity V.
calculate the velocity with which the first man would have jumped?

Answer 1

M * 0 + m * V0 = (M + m) * V1
(M + m) * V1 - m * V = M * 0

So, V0 = V.