8.4 On The Road *Practical And Skididng Flashcards
1
Q
What is thinking distance
A
The distance travelled by a vehicle in the time it takes the driver to react
2
Q
Thinking distance =
A
Speed x reaction time
v x t
3
Q
What can effect the thinking distance of a car
A
The reaction time of a driver is affected by distractions, drugs, alcohol which is why mobile phones are banned in uk
4
Q
What is braking distance
A
The distance travelled by a car in the time it takes to stop safely from when the brakes are first applied
5
Q
Braking distance assuming constant deceleration to zero speed
A
S2 = u^2/2a
6
Q
Stopping distance =
A
Thinking distance + braking distance = ut + u^2/2a
7
Q
At 30mph what is the thinking and braking distance
A
30ft
45ft
8
Q
50mph thinking and braking distance
A
50ft
125ft
9
Q
70mph thinking and braking distance
A
70ft
245ft
