1. The problem statement, all variables and given/known data A car is traveling at a given velocity on a road with a coefficient of friction of 0.5 when it suddenly has to apply the brakes. Given that it travels 10 meters before coming to a stop what is the initial velocity of the car? 2. Relevant equations Vi^2=Vf^2 + 2ax KE=1/2mv^2 3. The attempt at a solution[/b I had some trouble with this since the mass isnt given, i supposed i had to figure out a way to relate two equations so that the mass could cancel but i had a hard time doing so. Can anybody help?