Question

A man throws a ball in the air 80 m high what’s the total time the ball was in the air

Answer 1

8.0 seconds

Step-by-step explanation:

Remember: at the highest point, the ball's velocity is 0.

Given:

Δy = 80 m

v = 0 m/s

a = -9.8 m/s²

Find: t

Δy = vt − ½ at²

(80 m) = (0 m/s) t − ½ (-9.8 m/s²) t²

t = 4.0 s

It takes 4.0 seconds for the ball to reach the highest point. So the ball spends a total of 8.0 seconds in the air.