Question

An athlete kicks a soccer ball that starts at rest so that it leaves their foot with a speed of 10m/s from the top o f a rectangular shaped canyon. If the athlete's foot is in contact with the ball for only 0.02 seconds, determine the accceleration of the ball during the kick.

Answer 1

`a=500m/s^2`

Step-by-step explanation:

We need only to apply the definition of acceleration, which is:

`a=(v_f-v_i)/(t_f-t_i)`

In our case the final velocity is
`v_f=10m/s`, the initial velocity is
`v_i=0m/s` since it departs from rest, the final time is
`t_f=0.02s` and the initial time we are considering is
`t_i=0s`

So for our values we have:

`a=(10m/s-0m/s)/(0.02s-0s)=500m/s^2`