Difference between revisions of "Braking Distance"

Revision as of 12:07, 28 October 2019

Key Stage 4

Meaning

Braking distance is the distance a vehicle travels from the moment the brakes are applied to the moment the vehicle stops.

About Braking Distance

Braking distance depends on:

The speed of the vehicle - The greater the speed the larger the braking distance.
The conditions of the road and tyres - The less friction between the road and tyres the longer the braking distance. Water, oil or ice on the road all reduce the friction between the tyres and the road, causing the braking distance to be greater than for a dry road.

Different road surfaces have different amounts of friction. The painted lines on the road and the metal of a manhole cover are both low friction surfaces which are especially dangerous for motorcycles which only have two wheels (at least with 4 wheels a car will have 3 of them on the normal road with 1 on the slippery surface of a line or manhole cover).

References

AQA

Braking distance, page 166, GCSE Physics; Student Book, Collins, AQA

Braking distance, pages 148-149, 157, GCSE Physics; Third Edition, Oxford University Press, AQA

Braking distance, pages 67, 69, GCSE Physics; The Revision Guide, CGP, AQA

Braking distances, pages 10, 163-4, GCSE Physics, Hodder, AQA

Braking distances, pages 176-178, GCSE Combined Science Trilogy; Physics, CGP, AQA

Braking distances, pages 208-210, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA

Braking distances, pages 215, 216, GCSE Combined Science; The Revision Guide, CGP, AQA

Braking distances; influencing factors, page 165, GCSE Physics, Hodder, AQA

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