5.14 Stopping Distances Flashcards
What is an emergency stop ?
The maximum force applied by brakes to stop the car in the shortest possible distance
How do you find out the stopping distance?
Thinking distance x braking distance
What is the thinking distance ?
How far a car travels during the drivers reaction time ?
What is the braking distance ?
The distance taken to stop under the braking force
What is your thinking distance affected by ?
Speed
Reaction time
What is the braking distance affected by ?
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
When the brake pedal is pushed what happens ?
Brake pads are pressed which causes friction and work to be done transferring energy to kinetic stores and thermal stores
The faster a vehicle is doing the …
More energy in kinetic stores
More work needed to be done
Greater braking force needed for car to stop
What does a larger braking force mean ?
A larger deceleration which Is dangerous because brakes could over heat
