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13 cards from this deck
Distance from when danger appears until car completely stops
Thinking distance + braking distance
Distance travelled while driver reacts to danger
Distance travelled while slowing after brakes applied
Directly proportional - doubles if speed doubles
Proportional to speed squared (v2v^2v2)
Increases by 4 times (quadruples)
Tiredness, distractions, alcohol, drugs, age
Wet/icy roads, worn tyres/brakes, heavy loads, slopes
Heat (through friction)
KE=12mv2KE = \frac{1}{2}mv^2KE=21mv2
Because kinetic energy depends on v2v^2v2
braking distance∝v2\text{braking distance} \propto v^2braking distance∝v2
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