Well, I am having trouble with this and I been looking at the book for a long time and still lost. The teacher never went over this so no notes to help me out here either. A football punter accelerates a football from rest to a speed of 10 m/s during the time in which his toe is in contact with the ball (about 0.18 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball? N I have no slight clue on where to start or what formula I should be using. Any help would be great.