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Braking Distance

The braking distance is the distance the vehicle has travelled from the time the brakes are applied to the time it stops.The braking distance is proportional to the square of the speed because there are two factors at play:     the speed    Δv has increased so the time taken for deceleration is longer
s=u2
2a
from v2=u2 + 2aswhere v = 0

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Specification: AQA Physics (7407), AS-level, 3.4.1.5 Newton's laws of motion. Topic: Newtons Laws of Motion.

Key terms in this lesson

Momentum
The product of an object's mass and its velocity; a vector quantity, conserved in any interaction provided no external resultant force acts.

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