1. The problem statement, all variables and given/known data A 1500 kg car drives around a flat 200-m-diameter circular track at 25 m/s. What is the magnitude and direction of the net force on the car? What causes this force? 2. Relevant equations F=mv2/r 3. The attempt at a solution So I suppose the net force is the force that maintains the circular motion. Thus, Fnet=(1500)(25)2/2100=9375N However, how exactly would I come to the conclusion that the direction of Fnet is toward the center and how do I determine that the force that causes this force to be frictional? I missed the class that we covered this entire chapter in, I'm doing my best to play catch up but am having trouble making the connection between linear and circular motion, so if the answers could be dumbed down a little for me that would be awesome. Thank you.