Stopping Distances (AQA GCSE Physics): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Thinking distance definition
Thinking distance definition
Distance traveled while reacting, before hitting brakes
Braking distance definition
Braking distance definition
Distance traveled while braking until car stops
Formula for stopping distance
Formula for stopping distance
Factors affecting thinking distance (name 3)
Factors affecting thinking distance (name 3)
Speed, reaction time, tiredness, drugs/alcohol, distractions
Factors affecting braking distance (name 3)
Factors affecting braking distance (name 3)
Speed, road conditions, tyre condition, brake pads, weight
Total stopping distance at 30 mph
Total stopping distance at 30 mph
23 m
Total stopping distance at 70 mph
Total stopping distance at 70 mph
96 m
Thinking distance at 30 mph
Thinking distance at 30 mph
9 m
Braking distance at 30 mph
Braking distance at 30 mph
14 m
Typical human reaction time range
Typical human reaction time range
0.2 to 0.9 seconds
Ruler drop formula for reaction time
Ruler drop formula for reaction time
Kinetic energy change during braking
Kinetic energy change during braking
Reduces/decreases
Brake temperature change during braking
Brake temperature change during braking
Increases
Effect of greater speed on braking force
Effect of greater speed on braking force
Greater force needed to stop over same distance
Risk of braking at high speed
Risk of braking at high speed
Brake overheating and loss of control