1
Q
What is thinking Distance?
A
distance travelled between the moment the driver spots a reason to stop till the break are applied
2
Q
What is Braking distance?
A
distance travelled between the moment the brakes are applied till the vehicle stops.
3
Q
Equation for thinking Distance
A
Thinking distance = Reaction time x Speed
4
Q
What factors can affect the driver’s reaction time?
A
-Tiredness
- Alcohol
- Drugs
5
Q
What is the relationship between barking distance and initial speed (U)?
A
D α u^2
6
Q
Why is braking distance directly proportional to the Intial speed squared?
A
-Because in order for a vehicle to come to a complete stop , its kinetic energy has to be dissipated by the brakes and Ke = 1/2mv^2
7
Q
A
Physics Year 12
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