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A 75 kg person is standing at the very end of a 6.0 meter long stationary...

A 75 kg person is standing at the very end of a 6.0 meter long stationary raft with a mass of 225 kg that is floating frictionlessly on the water. If the person then walks with a constant velocity of 1.0 m/s all the way to the other end of the raft, how far will the raft move, and what will be the average velocity of the raft during that movement (as observed by a stationary person on shore)?

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