The quarterback Q throws the football when the receiver R is in the position shown. The receiver's velocity is constant at 9.6 yd/sec, and he catches passes when the ball is 7.7 ft above the ground. If the quarterback desires the receiver to catch the ball 2.7 sec after the launch instant shown, determine the initial speed vo and angle required. 6.5' Answers: Vo = e Q i i e 20 40 yd R ft/sec