A man of 50kg is standing at one end on a boat of length 25m and mass 200kg. If he starts running and when
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Total momentum (relative to land) must remain zero. Let V be the final boat velocity (positive backwards). The man's final velocity with respect to land will be (V -2)m/s.
200*V + 25*(V-2) = 0
175 V = 50
V = 0.286 m/s
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