The figure below shows a metal ball with a mass of 3.08 kg bouncing off a wall. The ball has the same speed just before and just after the impact  (v = 10.0 m/s) , and the angle its path makes with the wall is  ? = 60.0°  as shown. (Because we are analyzing the motion of the ball over a very short time just before and after impact, you may safely ignore the effect of gravity on the ball.) The ball is in contact with the wall for 0.172 s. What is the average force (in N) exerted by the wall on the ball during the impact? The path of a ball hitting a vertical wall is superimposed on an x y plane. The ball starts in the third quadrant and moves up and to the right at an angle ? with the vertical until it hits the y-axis, whereupon it moves up and to the left at an angle also at ? to the vertical.

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