Some of the kinetic energy of a body in motion is used up in overcoming friction, which acts in the direction opposite to that of the motion. The reduction in energy means that the stopping force needs less time to do its work.
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The stopping distance, after decelerating from 60 mph to 0 mph, will depend on the efficiency of the brakes, the friction between the tyres and the road surface and the mass of the vehicle.The initial speed alone cannot give you an answer.
The increase in time And cost with distance is referred to as friction of distance
You're stopping every 5 miles, on the average.
23 meters on a dry pavement.
The distance needs to be further apart from the car in front