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12 cards from this deck
Vehicle speed and reaction time
Faster speed = greater distance during reaction
More distance travelled before brakes applied
0.2 to 0.9 seconds
Tiredness, drugs, alcohol, distractions
Reaction times typically less than a second
Drop ruler, measure distance fallen before caught
0 cm mark, thumb & forefinger hovering
Slower reaction time
9.81 m/s29.81 \text{ m/s}^29.81 m/s2
v2=u2+2asv^2 = u^2 + 2asv2=u2+2as
Repeat several times, calculate average
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