J, F(t)dt The time average of a Force F (t) in the time interval t; and t2 is given as ty – ti a ball with mass m is left without speed first from the height of hi. The ball hits a horizontal surface and reaches its hi maximum height vertically. Since the time of contact of the ball with the surface is t, we find the average value of the time Naverage of the intensity of the normal force applied to the ball by the surface in terms of those given. m h, h,
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