1. The problem statement, all variables and given/known data A 900kg car is moving on a level road at 80km/h. If the brakes are applied, what is the distance it will take to stop if the coefficient of kinetic friction between the tires and the road is 0.45. 2. Relevant equations F=ma D=vt Vf=Vi+at ... Really basic Kinematics and Forces(grade 11 level) 3. The attempt at a solution I need help finding the formula for the Force applied. I find it really hard because I am not sure if the velocity is constant or not. I don't really know how to explain my attempt to solve it. I tried using D=vt but I can't find time without acceleration; without acceleration I am not able to find distance, etc. How would you solve this kind of problem? I tried to google for the formula but I can't seem to find any that will be suitable for this problem. Help would be very much appreciated.