Forces and braking Flashcards
1
Q
In terms of forces what happens when a vehicle travels at a constant speed?
A
The resistive forces and the driving force are balanced
2
Q
Finish this sentence, the greater the speed of the vehicle…………..
A
……..the greater the braking force needed to stop the vehicle in a certain distance
3
Q
Define stopping distance
A
The thinking distance- The sum of the distance the vehicle travels during the drivers reaction time
The braking distance- The distance the vehicle travels under breaking force
4
Q
What things can affect a persons reaction time? (4 things)
A
- Drugs
- Alcohol
- Tiredness
- Distractions in and out of the vehicle
5
Q
What happens when the brake of a vehicle are applied?
A
- Work done by the friction force between the brakes and the wheels reduces the kinetic energy of the vehicle
- The temperature of the brakes increase as a result
6
Q
What can affect the breaking distance of a car?
A
- Poor weather and road conditions
- Brake condition
