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Formulary Braking distance
    (acceleration distance)


Braking distance for continuous deceleration

The braking or the accelleration distance is the distance covered during a certain, steady change of speed per time-unit.

      v²
s =
      2 · a


      v²
a =
      2 · s


Check your calculation!     You need help?
Please enter numbers only in two of the three fields!
v Starting/end speed m/s
a Deceleration/acceleration m/s²
s Braking/acceleration distance m

       a · t²
s =
      2


       2 · s
a =
      t²

Check your calculation!     You need help?
Please enter numbers only in two of the three fields!
a Deceleration/acceleration m/s²
t Deceleration/acceleration period s
s Deceleration/acceleration distance m

       v · t
s =
        2

       2 · s
v =
        t

       2 · s
t =
        v

Check your calculation!     You need help?
Please enter numbers only in two of the three fields!
v Starting/end speed m/s
t Deceleration/acceleration period s
s Deceleration/acceleration distance m

Example

Var. set.:

a = 9,3 m/s²; v = 90 km/h = 25 m/s

Var. asked for:

s in m

Answer:

         v²
s = =
       2 · a

  25² m²/s²
= 33,6 m
2 · 9,3 m/s²



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