Question

A hockey ball of mass 200g travelling at 10m/s square is struck by a hockey stick so as to return it along its original path with a velocity at 5m/s square Calculate the magnitude of change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick

Answer 1

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Answer 2

Mass = 200 g = 0.2 kg
u = 10 m/s (initial velocity)
v = 5 m/s (final velocity)

CHANGE IN MOMENTUM
= mv - mu
= m(v-u)
= 0.2 (5-10)
= - 1 kg m/s