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What is Friction?
A force between 2 surfaces that are sliding or trying to slide against each other.
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Friction can be a problem, it can cause......?
wear and tear
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T or F , The rougher the surface, the faster an object will travel over the surface.
False
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How to reduce friction?
use lubricants
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A type of friction that occurs when air pushes against a moving object
air resistance
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What does friction produce?
Heat
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What is the unit called that measures force?
Newton
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Which would create more friction? metal of carpet
carpet
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An example of useful friction
any
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Rougher surfaces have ...
greater friction
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baam
Lose 15 points!
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fairy
Take points!
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25
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rocket
Go to first place!
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banana
Go to last place!
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An example of not useful friction
any
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banana
Go to last place!
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gift
Win 15 points!
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fairy
Take points!
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25
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thief
Give points!
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trap
No points!
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star
Double points!
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gift
Win 25 points!
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baam
Lose 25 points!
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How does friction affect speed?
more friction decreases speed, or slow down and stop a moving object
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How would the absence of friction affect a marble traveling on a long, straight path?
The marble would remain at constant speed.
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