A hockey ball of mass 2kg travelling at 10 m/s is struck by a hockey stick so as to return it along its original path with a velocity at 2m/s. Calculate the change of momentum occured in the motion of hockey ball by the force applied by the stick.
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Answer:A hockey ball of mass 200 g travelling at 10 m s-1 is struck by a hockey stick so as to return it along its original path with a velocity at 5 m s-1. ... Hence, the change in momentum of the hockey ball is 3 kg m sˆ'1.
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