1. The problem statement, all variables and given/known data A 2,254-kg car is moving down a road with a slope of 10 degrees while speeding up at a rate of 1.1 m/s^2. What is the direction and magnitude of the frictional force? (define positive in the forward direction, i.e., down the slope)? 2. Relevant equations ax=μgcos-gsin 3. The attempt at a solution μ=ax/gcos-gsin 1.1m/9.81(cos10-sin10)=0.138 i keep on getting this answer.