Question

42 A quarterback is backpedaling at 5.00 f/s north, with respect to the ground, when he throws the football with a velocity with respect to himself of 15.0 f/s at an angle of 24.0 above the horizontal toward the south. The ball is released from a point that is 7.00 feet above the ground. A receiver, running at a constant 10.0 f/s due south of the quarterback, catches the ball when it is 4.50 feet above the ground. Calculate (a) the horizontal displacement of the ball with respect to the ground, and (b) the instantaneous speed of the ball with respect to the receiver just before the ball touches the receiver's hands.

Answer 1