Calculate average deceleration from a speed to stopped given the speed and the time or the distance.

  • Speed is entered in kilometres per hour (km h-1)
  • Distance is entres in metres (m)
  • Time is entered in seconds (s)
  • Deceleration is calculated in metres per second squared (ms-2)
  • Deceleration is also presented in terms of the force of gravity (g)
  • Calculation will take place automatically when numbers are entered into the Initial speed cell
    and one or both of the stopping distance and stopping time cells.
Initial speed km/h
Stopping distance metres Deceleration ms-2 g
Stopping time seconds Deceleration ms-2 g