5.14 Stopping Distances

Question 1

What is an emergency stop ?

Answer 1

The maximum force applied by brakes to stop the car in the shortest possible distance

Question 2

How do you find out the stopping distance?

Answer 2

Thinking distance x braking distance

Question 3

What is the thinking distance ?

Answer 3

How far a car travels during the drivers reaction time ?

Question 4

What is the braking distance ?

Answer 4

The distance taken to stop under the braking force

Question 5

What is your thinking distance affected by ?

Answer 5

Speed

Reaction time

Question 6

What is the braking distance affected by ?

Answer 6

Speed
Weather - skidding tyres as less grip because it’s wet and icy
Condition of tyres - if tyres bald cannot get rid of water
Condition of brakes - if brakes are faulty they won’t be able to apply as much

Question 7

When the brake pedal is pushed what happens ?

Answer 7

Brake pads are pressed which causes friction and work to be done transferring energy to kinetic stores and thermal stores

Question 8

The faster a vehicle is doing the …

Answer 8

More energy in kinetic stores
More work needed to be done
Greater braking force needed for car to stop

Question 9

What does a larger braking force mean ?

Answer 9

A larger deceleration which Is dangerous because brakes could over heat