Examples
Examples
Try the starting example
- Observed stops: ID, supplied initial km/h, measured braking-only distance m
- A,36,10 B,72,40
- Separate supplied reaction interval (seconds)
- 1.5
- Equivalent constant-deceleration magnitude by observed stop (m/s squared)
- A: 5; B: 5
- Equivalent braking time by observed stop (seconds)
- A: 2; B: 4
- Separate supplied reaction-travel distance (m)
- A: 15; B: 30
- Observed braking distance plus supplied reaction-travel scenario (m)
- A: 25; B: 70
Try another scenario
- Observed stops: ID, supplied initial km/h, measured braking-only distance m
- A,36,10 B,72,40
- Separate supplied reaction interval (seconds)
- 1
- Equivalent constant-deceleration magnitude by observed stop (m/s squared)
- A: 5; B: 5
- Equivalent braking time by observed stop (seconds)
- A: 2; B: 4
- Separate supplied reaction-travel distance (m)
- A: 10; B: 20
- Observed braking distance plus supplied reaction-travel scenario (m)
- A: 20; B: 60
Calculation method
Calculation method
Equivalent constant-deceleration magnitude by observed stop (m/s squared)
Convert km/h to m/s, then v²/(2×observed braking distance).
Equivalent braking time by observed stop (seconds)
2×observed braking distance/v, under the equivalent uniform-deceleration model.
Separate supplied reaction-travel distance (m)
Initial supplied speed in m/s×supplied reaction interval.
Observed braking distance plus supplied reaction-travel scenario (m)
Observed braking-only distance+separate constant-speed reaction-travel assumption.
Symbols and units
- a
- Observed stops: ID, supplied initial km/h, measured braking-only distance m
- b
- Separate supplied reaction interval (seconds)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A descriptive transformation of supplied measured stops and an explicit reaction scenario, not a forecast for other speeds/roads, a brake inspection or a safe following-distance recommendation. Braking need not actually have been uniform.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: ratios, unit rates and supplied measurement arithmetic ↗
Background reading; this does not imply endorsement or independent review of SumFizz.