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A boy of mass 45 kg stands on one end of a boat of mass 800 kg and length 4.5 m.The boat moves at a speed 4.5 m/s to the

right (i) initially. If the boy starts to walk on the boat with a relative speed to the boat 1.5 m/s to the left, what will be the boat's new velocity? Assume the boat has no friction with water. V boy to boat= -1.5i m/s ( to the left is negative i direction)

Fig: 1