Question

Bill throws a tennis ball vertically upward such that it leaves his hand with a speed of 12 m/s. Bill catches the ball at the same height from which he released it. Assume that air resistance is negligible, so the tennis ball can be considered to be in free-fall, with an acceleration of magnitude g=9.80 m/s^2. Determine the maximum vertical displacement of the ball and the time it takes to reach that point.

Answer 1

i dun know

Answer 2

2.25