Forces and braking Flashcards
What is stopping distance
The sum of the think distance and the braking distance
For a given braking force, the greater the speed of the vehicle…
The greater the stopping distance
What is the range for reaction times?
0.2 - 0.9 seconds
What factors can affect a driver’s reaction time?
- Tiredness
- Drugs
- Alcohol
- Distractions
What factors can affect the braking distance?
- Adverse road conditions
- Adverse weather conditions (wet & icy)
- Poor condition of vehicle (Brakes & tyres)
When a force is applied to the brakes…
Work is done by the friction force between the brakes and the wheel reduces its kinetic energy of the vehicle and the temperature of the brakes increases
The greater the speed of a vehicle…
The greater the braking force needed to stop the vehicle in a certain distance
The greater the braking force…
The greater the deceleration if the vehicle
Large decelerations may lead to …
Brakes overheating and/or loss of control
What is momentum?
The measure of how difficult it is to stop a moving object
