Acceleration; Resistive Forces; Stopping Distances

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• Created by: Lina
• Created on: 09-04-14 15:38
Acceleration has direction. True or false?
True
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What does it mean, when two objects interact, the forces they exert on each other are equal and opposite?
When you push smth, it will push back against you, just as hard
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What does the area under the velocity-time graph represent?
Distance
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What is braking distance?
The distance a car travels after the brakes have been applied
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What is thinking distance?
The distance the car travels during the driver's reaction time
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What is total stopping distance?
Thinking distance+ braking distance
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What is reaction time?
Time between the driver spotting a hazard and taking action
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2 factors affecting thinking distance
Tiredness, drugs
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4 factors affecting braking distance
How fast you're going; how good your brakes are; how good your tyres are; how good the grip is
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How do brakes affect braking distance
Worn or faulty brakes reduce the force that they can apply- if too much force is applied, the wheels lock+ the car skids
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How do tyres affect the braking distance?
Have to have a certain tread depth, otherwise, won't be able to get ride of water in wet conditions. Leaves, diesel spills, etc. will cause it to skid
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What are the 3 things affecting the grip of the car?
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How do weather conditions affect the grip of a car?
Wet/ icy roads are more slippy, so it is harder to brake, and you travel further before stopping, as the friction between the tyres and the road is reduced
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Other cards in this set

Card 2

Front

What does it mean, when two objects interact, the forces they exert on each other are equal and opposite?

Back

When you push smth, it will push back against you, just as hard

Card 3

Front

What does the area under the velocity-time graph represent?

Card 4

Front

What is braking distance?

Card 5

Front

What is thinking distance?