Question

How long was Michael Jordan in the air when he jumped straight up with a speed of 4.5 m/s? I know the answer is 0.918 seconds, but I don't know how to get there.

Answer 1

Step-by-step explanation:

Using the equation of motion

v = u+gt

v is the final velocity

u si the initial velocity

g is the acceleration due to gravity

t is the time

Substitute

0 = 4.5-(9.8)t

-4.5 = -9.8t

t = 4.5/9.8

t = 0.459s