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Posted by on Thursday, January 19, 2012 at 10:43pm.

A 49.4 kg swimmer is standing on a stationary 214 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +3.60 m/s relative to the shore. Calculate the magnitude of the recoil velocity that the raft would have if there were no resistance due to the water.

  • physics - , Thursday, January 19, 2012 at 11:50pm

    Use the fact that total momentum remains zero.

    49.4 * 3.60 + 214 * Vraft = 0

    Solve for Vraft

    The negative sign will mean it goes backwards.

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