AQA GCSE Physics Paper 2 Practice Exam 2026 - Free AQA GCSE Physics Practice Questions and Study Guide

The formula for calculating stopping distance is the sum of thinking distance and braking distance.

Thinking distance refers to the distance a vehicle travels during the driver's reaction time, which is how long it takes for the driver to perceive a hazard and respond by applying the brakes. This distance varies depending on the speed of the vehicle and the driver's reaction time.

Braking distance is the distance a vehicle travels while it is slowing down to a stop after the brakes are applied. This distance can be influenced by various factors, such as the vehicle's speed, road conditions, and the efficiency of the braking system.

Therefore, to find the total stopping distance, one must add the distance traveled during the thinking time to the distance traveled during braking. This total gives a comprehensive understanding of how far a vehicle will continue to move before coming to a complete stop.