How many possible directions are there for the frictional force? Physicists categorize the frictional force according...

How many possible directions are there for the frictional force?
Physicists categorize the frictional force according to the relative motion between the two surfaces. What are some of the categories?
One category of frictional forces is the static frictional force. What is the relative motion between the surfaces for this category? Describe a theory of static frictional forces.
Another category of frictional forces is the kinetic frictional force. What is the relative motion between the surfaces for this category? Describe a theory of kinetic frictional forces.

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genius_generous answered 6 months ago

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