Final answer:
The rule that enables drivers to plan stopping distance in terms other than feet is called the braking distance.
Step-by-step explanation:
The rule that enables drivers to plan stopping distance in terms other than feet is called the braking distance. Braking distance refers to the distance a car travels after the brakes have been applied until the car comes to a complete stop.
Calculating the braking distance involves considering factors such as the initial velocity of the car, the coefficient of friction between the tires and the road surface, and the reaction time of the driver.
For example, when a driver sees a red light and has a reaction time of 0.500 s, they need to calculate the distance the car travels during the reaction time and then add that to the braking distance to determine the total stopping distance.