Question

A soccer ball at rest is kicked by a soccer player. The ball travels a distance of 0.4 m over a time of 0.16 s. What is the acceleration rate of the ball over the period?

Answer 1

$s=at^2/2 \to a=2s/t^2=2\cdot0.4/0.16^2=31.25\ (m/s^2)$