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Two men, each of mass m, stand on the ed...

Two men, each of mass m, stand on the edge of a stationary buggy of mass M. Assuming the friction to be negligible, find the velocity of the buggy after both men jump off with the same horizontal velocity u relative to the buggy: (1) simultaneously, (2) one after the other. In what case will the velocity of the buggy be greater and how many times?

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The correct Answer is:
`"["(2"mu")/(M+2m),"mu"/(M+m)+"mu"/(M+2m)"]"`
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