If a ball leaves the ground with a vertical velocity of 5.46 m/s, how long does it take the ball to reach the highest point?

0.557 s

Explanation:

Given:

v₀ = 5.46 m/s

v = 0 m/s

a = -9.8 m/s²

Find: t

v = at + v₀

0 m/s = (-9.8 m/s²) t + 5.46 m/s

t = 0.557 s

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.