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What is a force?
A force is the push and pull applied on an object.
What are contact forces?
Forces when two objects have a physical contact with each other.
Do "non contact forces" need physical contact?
No
Is it "contact" or "non contact force"?
It is "non contact force". It is gravity.
Is it "contact" or "non contact force"?
It is "contact force".
Is it "contact" or "non contact force"?
It is "contact force".
Is it "contact" or "non contact force"?
It is "non contact force".
It is a force that attracts the objects to the ground.
It is gravity.
Name 3 machines that need "contact forces".
A car, a bike, a computer...
How do we call this force?
It is magnetism.