# Question: How Does Speed Affect Braking Distance?

## When speed increases from 20 mph to 40 mph How is the braking distance affected?

The faster you drive the longer it takes to stop.

This means speeding increases your stopping distance and force of impact.

Double your speed from 20 to 40 mph your braking distance and force of impact are 4 times greater.

Triple your speed from 20 to 60 mph and your braking distance and impact are 9 times greater..

## What factors increase braking distance?

The braking distance of a vehicle can be affected by:poor road and weather conditions, such as wet or icy roads.poor vehicle conditions, such as worn brakes or worn tyres.a greater speed.the car’s mass – more mass means a greater braking distance.

## What increases braking distance?

The braking distance of a vehicle can be increased by: poor road and weather conditions, such as gravel, or wet or icy roads – less friction between tyres and the road. poor vehicle conditions, such as worn brakes or worn tyres – less friction between brakes and wheels.

## What is the relationship between speed and braking distance?

Braking distance is the time it takes for your car to come to a complete stop after you’ve hit your brakes. When you double the speed of your car, your braking distance quadruples. As shown below, every time you double your speed, you multiply your braking distance by four.

## Why does the braking distance of a car increase with speed?

Speed increases both the thinking distance and the braking distance. At faster speeds, the driver will cover more ground before reacting to a hazard and more distance before the driver brakes to a complete stop.

## How does an increase in speed affect the reaction distance and the braking distance?

In fact, a doubling of the speed more than doubles the braking distance. One also observes that an increase in speed causes an increase in reaction distance. This effect is not as pronounced as the effect of car speed on braking distance for a doubling of car speed doubles the reaction distance.