FRICTION AND BRAKING
2 marks · NormalState what is meant by (a) thinking distance, and (b) braking distance of a vehicle.
State what is meant by thinking distance.
State what is meant by braking distance.
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(a) The distance a vehicle travels during the driver's reaction time, before the brakes are applied.
(b) The distance a vehicle travels after the brakes are applied until it comes to a stop.
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Marking points
B1 (a) · 1 mark · Clear statement of thinking distance as distance travelled during driver's reaction time, before the brakes are applied.
B1 (b) · 1 mark · Clear statement of braking distance as distance covered from the moment brakes are applied until the vehicle stops.
Worked solution
(a) Thinking distance is the distance travelled by the vehicle while the driver reacts and before braking begins.
(b) Braking distance is the distance travelled by the vehicle from the moment the brakes are applied until it comes to a complete stop.