Question

At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 4.6 m/s. A player cannot touch the ball until after it reaches its max height and begins to fall down. What is the minimum time that a player must wait before touching the ball?

Answer 1

The answer would be 0.5 seconds and we know this by applying the next formula:
V=V0(it means velocity zero or inicial)+gt
just replace like this:
4.6 - 9.8t = 0
The rest i'll leave it up to you :)just do the calculations. Hope this works for you