if an object has known mass (1500 kg) , travelling at a constant (10 m\s) speed , I can calculate that the car has 75000 joules in kinetic energy(.1/2 *mass*velocity sq.) how do I find stopping distance? Brakes possess maximum force 3750 Newtons . How do i rearrange this formula ? It is driving me crazier … Thanks

Its been 2 years since I’ve taken physics but I’m fairly sure my interpretation is correct. 1J = 1Nm. In order to stop the brakes must exert a force equal to that of the kinetic energy of the car. You can visualise this in two ways either Fc/D=Fb ((N*m)/m)=N) or Fc=D*Fb (N*m=N*m) where Fc is the force of the car, Fb is the force of the brakes, and D is the distance needed to stop. 75000=3750*D 75000/3750=D 20m=D