Before revision: Newton's Law and Equation of Motion From Newton's second law: For a level surface, the frictional force resulting from coefficient of friction is: Equating the two yields the deceleration: The form of the formulas for constant acceleration is: Setting and then substituting into the equation yields the braking distance: Total stopping distance The total stopping distance is the sum of the perception-reaction distance and the braking distance.
After revision: Newton's law and equation of motion From Newton's second law: For a level surface, the frictional force resulting from coefficient of friction is: Equating the two yields the deceleration: The form of the formulas for constant acceleration is: Setting and then substituting into the equation yields the braking distance: Total stopping distance The total stopping distance is the sum of the perception-reaction distance and the braking distance.