Stopping Distance (OCR GCSE Physics A (Gateway Science Suite)): Flashcards

Distance travelled before reacting to a hazard

Distance travelled while braking until the car stops

$\text{stopping distance} = \text{thinking distance} + \text{braking distance}$

Speed, reaction time, concentration, tiredness, distractions, drugs/alcohol

Speed, road conditions, tyre tread, brake pads, weight

0.2 to 0.9 seconds

23 m (9 m thinking + 14 m braking)

73 m (18 m thinking + 55 m braking)

Kinetic energy reduces

Temperature of brakes increases

Greater speed needs greater force to stop in same distance

Brake overheating and loss of control