A car of mass 1000kg is sliding down a hill. The coefficients of friction between the cars tires and the ground are u=0.89 and u[k]=.61. For what inclination angle will the car slide down the hill with a constant velocity. _____ So what I figured was that the car will have constant velocity when there is 0 acceleration. So F-f[friction]=0 ( which I dont know is correct or not). Then I set ma=u[k]mgcosQ, and solved for cosQ to get arccos(a/u[k]g). I just dont think any of what I'm doing is correct. Where have I gone wrong?