Question

A raft of length Land mass M is a distance d from the dock. At the end closer to the dock stands a person of mass m. For the purpose of getting some numerical values assume that M-200 kg, ma 50 kg, L 10 m, d 4 m. Dock d a) As the person walks the center of mass of the system doesnt change. Explain why. b) The person walks to the other end of the raft. How far did the raft move relative to the dock? How far did the person move relative to the dock? c) If the person accelerated until it reaches the end of the raft with a speed 6 m/s relative to the raft, what would be the speed of the raft relative to the water What would be the speed of the person relative to the water?

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