## Braking Distance

It is the distance traversed by a vehicle between the points, at which brakes are applied and the point at which the vehicle comes to stop.### How To Calculate Braking Distance

Braking distance may be obtained by equating the work done in stopping the vehicle and the kinetic energy .If v is the design speed of vehicle in m/sec ,f is the coefficient of friction, W is the total weight of the vehicle and g is the acceleration due to gravity = 9.81 meter per second square, I is the braking distance then:kinetic energy at design speed = mv

*/2 = Wv*

^{2}*/2g*

^{2}
Work done against friction force in
stopping the vehicle = f.W.
I

Hence,

Hence,

f.W.I
= Wv

*/2g*^{2}
or, I = v

*/2gf*^{2}
If V is the speed of vehicle in kilometer per hour(Kmph) ,then

Braking Distance |

[When (V) speed in Kmph then,v =0.278V]

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