# Friction problem

by ksle82
Tags: friction
 P: 38 A car travelling at an initial velocity $$v_{0}$$ applies its brakes to come to a stop. The coeffictien of friction is $$\mu$$. What distance is required to stop? I know that you can solve for x using this equation: $$v^2=v_{0}^2+2ax$$ -but i don't know how to solve for acceleration a. any help?
 P: 38 Im trying to do a force balace to find a but im not sure this is right. $$-\mum_{0}g=m_{0}a$$ solving for for a, i get $$a=\mug$$