A man is standing on a boat in still water. If he walks towards the shore, the boat will :
A
move away from the shore
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B
remain stationary
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C
move towards the shore
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D
sink
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Solution
The correct option is A move away from the shore No external force acts on the 'man+boat' system when the man walks on the boat in still water, so the center of mass of the system remains at rest. In order to do so, the boat move away from the shore when the man walks towards the shore.