1. The problem statement, all variables and given/known data A 3.00 Kg steel ball strikes a wall with a speed 10 m/s at an angle of 60 degrees with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.20 s, what is the average force exerted by the wall on the ball? 2. Relevant equations 3. The attempt at a solution Find Pf and Pi and use I=Pi-Pf then solve for F. I do not know what do use this to solve for F.