how far will it skid?

Question

A car travels at 30 m/s on a road where u_k = 0.80 and u_s = 0.94. How far will the car skid if the wheels lock and it skids to a stop?

Answer 1

Use the equation mv²/2- mgu_kd=0 and solve for d using v=30m/sec and u_k=.8. In so doing d= v²/2u_kg = 900/15.68 and d=57.4m