When a 53.4g tennis ball is served, it accelerates from rest to a speed of 40.5m/s. The impact with the racket gives the ball a constant acceleration over a distancce of 46.6cm. What is the mgnitude of the net force acting on the ball? I converted the 53.5g into kg=.0535kg I converted 46.6cm into m=.466 So we have the distance, mass, force but not the net force. I figured out the time by 40.5=.466/x x=.01150secs and figured out the acceleration byt 40.5/.0111506=3519.8 and then net force=acceleration * mass f=.0534kg*3519.8=187.9599 But it's wrong, what am I doing wrong?