A slide loving pig slides down a 35 degree slide in twice the time it would taken to slide down a frictionless 35 degree slide. What is the coefficient of kinetic friction between the pig and slide? So with the frictionless slide I found ax=8.03m/s^2 but without velocity or the length of the slide I'm not sure how to find time. So i shifted to the slide with friction, Fy= n-mgsin(35) 0=n-mgsin(35) N=mg sin(35) Fx=-fk+mgcos(35) Fx= mg(-μksin(35))+(cos(35)) M*ax=^ Ax=g(-μksin(35))+(cos(35)) I definitely can't use the same value of acceleration right? Because the first acceleration assumed no opposing force.