1. The problem statement, all variables and given/known data http://i241.photobucket.com/albums/ff4/alg5045/Ex5-07.gif That figure shows the velocity graph of a 5.5 kg object as it moves along the x-axis. What is the net force acting on this object at the given times? a.) 3s b.) 4s and c.) 7s 2. Relevant equations F=ma 3. The attempt at a solution For 3 seconds, I used F= m (change in velocity/change in time), and I got 22N, which was the right answer. For 4 seconds, I got zero. I am stuck on how to find the 7 second one.