[SOLVED] Friction problem 1. The problem statement, all variables and given/known data Car is moving down a 10degree slope and applies the breaks. The net force acting on the car as it stops is -2.0 x 10^4 N. coefficient of kinetic friction is .797. What is the mass? what is the magnitude of the normal force? 2. Relevant equations Fnet=M*Anet=Fapplied - Fk Fk= muk*m*a = muk*Fn M= (Fapplied/Anet + mukG) i think that would be it 3. The attempt at a solution i tried doing this many ways but always seem to get it wrong. I quess I don't understand what the net force actually is. It is not equal to Fk. This is probably a lot simpler and i'm putting too much thought into it.