A man of 50 kg is standing at one end on...

A man of `50 kg` is standing at one end on a boat of length `25m` and mass `200kg`.If he starts running and when he reaches the other end, has a velocity `2ms^(-1)` with respect to the boat.The final velocity of the boat is

`2/5`

`2/3`

`8/5`

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