Find reaction travel plus braking distance from speed, deceleration, and thinking time.
| Reaction (m) | – |
| Braking (m) | – |
| Total (m) | – |
Use this calculator for a constant-deceleration stop: while you react you still cover v × t_react, then s_brake = v² / (2a).
50 km/h is about 13.9 m/s. Wet roads mean a smaller a and a longer stop. This is a kinematics sketch, not a legal stopping-distance table and not ABS or slope physics.
Speed (m/s): Speed in metres per second. 13.9 m/s is 50 km/h.
Deceleration (m/s²): How hard you slow. Dry ABS might be 7–8 m/s².
Reaction (s): Thinking time before the pedal, often about 1 s.
Reaction (m): Distance covered during reaction time.
Braking (m): Distance while decelerating.
Total (m): Reaction plus braking.
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