A ball is thrown with a 30m/s horizontal velocity towards a vertical rod. The 2m rod is pinned at the top of the rod (point A) and it is free to rotate around this point.    The ball contacts the rod 1.2m below A with a coefficient of restitution of .75   Assuming the rod has a mass of 10kg and the ball a mass of .1kg, determine the velocity of the ball after impact

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