• A hockey ball of masso.2 Kg travelling at 10 ms- is struck by a hockey stick so as to return it along its original path with a velocity
at 2 m/s . Calculate the change of momentum occurred in the motion
of the hockey ball by the force applied by the hockey stick.

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b) returns freshwater to the earth.

c) returns freshwater to the earth.c) occurs after condensation.

d) returns freshwater to the earth.c) occurs after condensation.d) roughly equal to the amount of evaporation.

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we need to know the time interval during which the force acts. impulse of force = momentum change