Question

A car skids to a stop at a traffic light, leaving behind a 8.25m skid mark as it comes to a rest. Assuming that the car is travelling at 14.5m/s and only the friction from the tires on the roadway stop the vehicle. Find the coefficient of friction

Answer 1

vf^2=vi^2+2ad=vi^2-2 (mu*mg)/m * ad

mu* g=vi^2/2d

solve for mu