Stopping distances Flashcards
what can stopping distance can be affected by ?
In an emergency, a driver may perform an emergency stop. This is where maximum force is applied by the breakers in order to stop the car in the shortest possible distance. The longer it takes to perdone an emergency stop, the higher the risk of crashing init whetever’s in front.
What is thinking distance ?
How far the car travels during the driver’s reaction time ( the time between the dry get seeing a hazard and applying the brakes)
What is Braking distance ?
It is the distance taken to stop under the braking force.
What is thinking distance affected by ?
Your speed - the faster your going the further you’ll travel during the time you take to react
You reaction time - the longer your reaction time, the longer your thinking distance.
What is braking distance affected by ?
Your speed - for a given braking force, the faster a vehicle travels, the longer it takes to stop.
The weather or road surface - There might be less grip between the vehicle’s tyres and the road, causing the tyres to skid.
Conditions if your tyres - if your throws are bald they can not get rid of water in wet conditions, causing skidding.
How good your brakes are - if brakes are worn or faulty, they won’t be able to apply as much force as well - maintained breaks , which could be dangerously when you need to brake hard.
How do you work out
stopping distance ?
Stopping distance = Thinking distance + braking distance.
what does braking rely on ?
The friction between the brakes and the wheels
When a brake ordeal is pushed, it causes brake pads to be pressed on to. the wheels.
This contact causes friction which causes work to be done. This work done between the brake and wheels transfers ebergery form which energy stores?
It transfers energy from the kinetic energy store of the wheels to the thermal energy store of the brakes. The brakes increase in temperature.
