The boy A is moving in a straight line away from the building at a constant speed v_A. At what horizontal distance d must he be from C in order to make the catch if the ball is thrown with a horizontal velocity v_C? Also determine the relative speed of the ball with respect to the boy A at the instant the catch is made. Given:

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VA = 4 ft S ft 10- VC = 10 S h = 20 ft 8 = 32.2 ft 2 S