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Chapter 5: Problem 8

Explain why a car with ABS brakes can have a shorter stopping distance.

Short Answer

Expert verified
A car with ABS brakes can have a shorter stopping distance because the ABS prevents the wheels from locking and skidding during braking. This allows the tires to maintain maximum contact and friction with the road, which helps to stop the car more efficiently.

Step by step solution

01

Understanding Braking

When a car brakes, it uses the friction between the brake pads and the wheels to slow down the vehicle. However, if a driver applies too much force on the brake, it can cause the wheels to lock and skid. Skidding reduces the traction between the tires and the road and leads to losing control, moreover, it increases the stopping distance.
02

Introduction to ABS

ABS or Anti-lock Braking System is a safety system used in cars to prevent the wheels from locking or skidding when they try to brake too hard. It does this by automatically modulating the brake pressure to the wheels. Therefore, ABS allows the driver to maintain the steering control while braking, which is not possible if the wheels are skidding.
03

How ABS Reduces Stopping Distance

By preventing the wheels from locking, ABS allows the tires to maintain their grip and a high level of traction with the road while braking, which maximizes the effectiveness of braking. Hence, braking distance can be reduced. However, note that the ABS systems' main purpose is to increase vehicle control and decrease wheel skidding, not necessarily to reduce stopping distance.

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