Explore speed and stopping distance
Explore why stopping distance grows quickly with speed. Separate the distance travelled during reaction from the distance covered while braking.
Your experiment
Change any value to update the result. Use the stated units.
Enable JavaScript to calculate with your own values.
Why it works
reaction distance = vt; braking distance = v²/(2a)
Assumptions and limits
An ideal straight, level-road model with constant braking deceleration after a fixed reaction time. It is not a safe-following-distance recommendation or a prediction for any vehicle or road.