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15
×
Name 3 machines that need "contact forces".
A car, a bike, a computer...
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×
boom
Lose 50 points!
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star
Double points!
Okay!
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rocket
Go to first place!
Okay!
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lifesaver
Give 20 points!
Oops!
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heart
Other team wins 25 points!
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magnet
Take 15 points!
Okay!
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rocket
Go to first place!
Okay!
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lifesaver
Give 25 points!
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15
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Is it "contact" or "non contact force"?
It is "contact force".
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15
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It is a force that attracts the objects to the ground.
It is gravity.
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15
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What are contact forces?
Forces when two objects have a physical contact with each other.
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15
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What is a force?
A force is the push and pull applied on an object.
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15
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Is it "contact" or "non contact force"?
It is "non contact force". It is gravity.
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15
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Is it "contact" or "non contact force"?
It is "non contact force".
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15
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Do "non contact forces" need physical contact?
No
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15
×
Is it "contact" or "non contact force"?
It is "contact force".
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banana
Go to last place!
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seesaw
Swap points!
Okay!
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fairy
Take points!
5
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25
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banana
Go to last place!
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15
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How do we call this force?
It is magnetism.
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boom
Lose 50 points!
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seesaw
Swap points!
Okay!
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gift
Win 25 points!
Okay!
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thief
Give points!
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25
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