An Olympic long jumper is capable of jumping 7.5 m. Assume that his horizontal speed is 8.8 m/s as he leaves the ground.

How long is he in the air?

How high does he go? Assume that he lands standing upright, that is, the same way he left the ground.

1 answer

Dx = Xo*t = 7.5 m.
8.8 * t = 7.5.
t = 0.852 s.

h = 0.5g*t^2.
g = 9.8 m/s^2.
t = 0.852 s.
h = ?.