The problem that follow involve straight-line motion. The time t is in seconds unless othe...

The problem that follow involve straight-line motion. The time t is in seconds unless otherwise stated.

Problem

An American football quarterback stands at A. At the instant the quarterback throws the football, the receiver is at B running at 20 tt/s toward C. where he catches the ball. The ball is thrown at an angle of 45° above the horizontal and it thrown and caught at the same height above the ground. Determine the magnitude of the ball's initial velocity and the length, of lime it is in the air.