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 . Calculate the magnitude of change of momentum occurred in the motion of the hockey ball by the force applied by the hockey stick.
Step 1 of 3 Using the formula for change in momentum, Change in momentum= m (u-v) Step 2 of 3 Putting all the values, we get Change in momentum = 1/5{10-(-5)} Step 3 of 3 Simplifying the term we get, Change in momentum= 3kg m/s Final answer Change in momentum of the hockey ball is 3kg m/s.
