1. The problem statement, all variables and given/known data The braking distance is the distance the car travels while decelerating once the brakes have been applied. A car of mass 450kg is travelling at a speed of 70MPH (31.3ms-1) when the driver makes an emergency stop. Calculate the deceleration of the car (Assume a uniform deceleration) We're also told that at 70mph/31.3ms-1 that the breaking distance is 75 m. 3. The attempt at a solution I did initially try to do this using the equations of motion but that gave me a huge answer, and didn't take into account the mass of the car so I didn't think it was right. Any help is hugely appreciated!