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A boat of 90 kg is floating in still wat...

A boat of `90 kg` is floating in still water. A boy of mass 30 kg walks from the stern to the bow. The length of the boat is 3 m. Calculate the distance through which the boat will move.

A

0.45 m

B

0.65 m

C

0.75 m

D

0.25 m

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