Stopping distance

Question 1

What is stopping distance?

Answer 1

Thinking distance + Braking distance

Question 2

Give three things that can affect thinking distance?

Answer 2

Distractions
Alcohol
Tiredness

DAT!

Question 3

Give three things that can affect braking distance

Answer 3

Icy roads
Worn tyres
Worn brakes

Question 4

The greater the [blank] that the car was driving at the [blank] the braking distance distance

Answer 4

The greater the speed that the car was driving at the greater the stopping distance

Question 5

Explain the dangers of large decelerations on cars

Answer 5

When a car is travelling at a high speed, a large braking force must be applied and so the car will decelerate rapidly.

This means that a large amount of kinetic energy is transferred to the brake’s thermal energy store which can cause the brakes to overheat and the driver to lose control of their vehicle

Question 6

Thinking distance is proportional to what?

Answer 6

Velocity

Question 7

Braking distance is proportional to what?

Answer 7

Velocity²