Avolleyball player hit a ball with a mass of 0.25 kg. the average acceleration of the ball is (15.5m/s to the 2nd power). how much force did the volleyball player apply to the ball?

Using the Newton's second Law

F≠0
F=ma

m= 0.25 kg
a= 15.5 m/s

F=ma
F=(.25)(15.5)
F=3.875 N

Ta daa!
Hope that was helpful!

if it was please rate this as "Brainiest"

PS this would be better suited to the "Physics" section