Factors Affecting Stopping Distance Flashcards
All 6 cards in this deck
Name four things that increase a driver's reaction time.
Drugs, alcohol, tiredness and distractions (e.g. using a phone).
How does a greater vehicle mass affect stopping distance?
A greater mass gives a longer braking distance, so the stopping distance increases.
How do worn brakes affect stopping distance?
Worn brakes give a smaller braking force, so the braking distance and stopping distance increase.
Why is it safer to drive more slowly on a wet road?
A wet road means less friction between the tyres and the road, so stopping distance is increased; a slower speed gives a shorter braking distance and reduces the chance of skidding.
Why are large decelerations dangerous for people in a vehicle?
A large change in velocity in a short time means a large force acts on the occupants (), which can cause serious injury.
What typical mass is used for a car when estimating the forces involved in braking or a collision?
About 1000 kg.