(P12.232)-The football player at A throws the ball in the y–z plane at a speed VA = 50 ft/s and an angle UA = 60° with the horizontal. At the instant the ball is thrown, the player is at B and is running with constant speed along the line BC in order to catch it. Determine this speed, VB, so that he makes the catch at the same elevation from which the ball was thrown.
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