what would a negative slope in a speed time graph show
decelleration
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what does the are underneath the line in speed time graph show
total distance travelled
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what is velocity
speed in a given direction
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2 things the stopping distance depends on
thinking distance and braking distance
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3 things that increase thinking distance
if car is going faster, if driver is UTI or if driver is distracted
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3 things that increase braking distance
faster speed, poor weather, poor condition of vehicle
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what happens to thinking and braking distance as speed doubles
thinking distances doubles and braking distance times by four
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3 things a car's feul consumption depends on
engine size, road conditions and force required to work against friction
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what is power a measure of
how quickly work is done
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2 things that kinetic energy depend on
mass and speed
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3 safety features of cars that protect person and what they do
seat belts absorb person's energy, air bags cushion impact of person and crumple zone absorbs a lot of energy in the crash
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3 safety features of cars that prevent accidents
anti-lock braking sytem prevent tyres from skidding, traction control stops car from skidding when accelerating and electric windows require less concentration to open
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3 things that can reduce stopping force
increasing stopping time, increasing stopping distance and decreasing acceleration
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Other cards in this set
Card 2
Front
what would a negative slope in a speed time graph show
Back
decelleration
Card 3
Front
what does the are underneath the line in speed time graph show
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