Question

Anaya Goodloe decides to spike the football after a big touchdown (on Earth) and it

bounces back up off the ground and is airborne for 3.2 seconds. With what velocity did the football leave the ground after the spike?​

Answer 1

The football leaves with the velocity, u = 15.68 m/s

Step-by-step explanation:

Given data,

The football bounces back up off the ground and is airborne for, t = 3.2 s

Let the football bounces back up off the ground in the vertical direction

The formula for time of flight is given by,

t = 2u /g

∴ u = gt / 2

Substituting the values,

u = 9.8 x 3.2 / 2

u = 15.68 m/s

Hence, the football leaves with the velocity, u = 15.68 m/s