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:[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Braking distance, pages 220-221, Gateway GCSE Physics, Oxford, OCR '']
:[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Braking distances, page 210, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR '']
==Key Stage 5==
===Meaning===
[[Braking Distance|Braking distance]] is the distance traveled by a vehicle in the [[time]] taken to stop it.
===About Braking Distance===
*[[Braking Distance|Braking distance]] depends on the vehicle's speed, mass, and the condition of the brakes.
*The [[Braking Distance|braking distance]] of a vehicle on the road is affected by road conditions, tire quality and the conditions of the brakes.
*[[Braking Distance|Braking distance]] is part of the total [[Stopping Distance|stopping distance]], which also includes [[Thinking Distance|thinking distance]] with depends upon [[Reaction Time|reaction time]].
===Formula===
[[Braking Distance|Braking distance]] can be given by the formula:
<math>s=𝑣^2\times2a</math>
Where:
s is the [[Stopping Distance|stopping distance]]
𝑣 is the initial [[velocity]] of the [[object]]
and
a is the [[acceleration]] of the [[object]] (in this case it is referred to as deceleration and if the velocity is chosen to be in a positive direction, the acceleration must be given a negative value).
When considering the [[friction]]al [[force]]s involved between surfaces such as the tyre and the road surface for a car then then [[Braking Distance|Braking distance]] can be given by the formula:
<math>s=𝑣^2\times2𝜇𝑔</math>
Where:
s is the [[Stopping Distance|stopping distance]]
𝑣 is the initial [[velocity]] of the car
μ is the [[Coefficient of Friction|coefficient of friction]]
and
g is the [[acceleration]] due to [[gravity]] or [[Gravitational Field Strength]].
===Examples===
*At higher speeds, the [[Braking Distance|braking distance]] increases significantly.
*Wet or icy roads increase the [[Braking Distance|braking distance]] due to reduced [[friction]].