Question

Steve Young stands on the 20-yard line, poised to throw long. He throws the ball at initial velocity v0 equal to 15.4 m/s and releases it at an angle θ equal to 45.0∘ .

1) Having faked an end around, Jerry Rice comes racing past Steve at a constant velocity VJ equal to 8.00 m/s, heading straight down the field. Assuming that Jerry catches the ball at the same height above the ground that Steve throws it, how long must Steve wait to throw, after Jerry goes past, so that the ball falls directly into Jerry's hands? (Express your answer to three significant figures.)

2) Jerry is coming straight past Steve at VJ equal to 8.00 m/s. But just as Jerry goes past, Steve starts to run in the same direction as Jerry with VS equal to 1.40 m/s. How long must Steve wait to release the ball so that it falls directly into Jerry's hands? (Express your answer to three significant figures.)

Answer 1

To calculate the how long must Steve wait to throw ball

So that it fall into hands of Jerry

1.calculate time of flight

2.calculate Range

3.calculate time taken by Jerry

4.subtrcact time of flight from time taken by Jerry