Homework Help: physics

Posted by Mluleki on Sunday, January 22, 2012 at 4:01pm.

A ball of mass 0,2kg travels towards a hockey player at 10 m.s-1.A force of 350N is exerted on the ball when she hits it so that it travels at 7,5 m.s-1 in the opposite direction.Calculate the time that the ball was in contact with the hockey stick

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