The ball is given no initial horizontal velocity. It is however given an initial angular velocity of 76 rad/s and allowed to drop vertically from a height of 0.835m. Right after the ball bounces its vertical velocity is 3.1m/s upwards and its forward horizontal velocity is 1.838m/s and the ball reduced spin. My question is what gives the ball its horizontal velocity? Furthermore would it be possible to relate the loss in angular momentum (due to reduced speed) to the horizontal velocity gained?