20. What is the difference between frictional force and gravitational force? A Frictional force is the opposing force that arises when one body moves over another body and acts at the surface of contact while gravitational force is the force of attraction between any two bodies that have mass. B. Frictional force is the force of attraction between any two bodies that have mass while gravitational force is the opposing force that arises when one body moves over another body and acts at the surface of contact. C. Both A and B D. None of the above
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Answer:
A. (not sure)
( A Frictional force is the opposing force that arises when one body moves over another body and acts at the surface of contact while gravitational force is the force of attraction between any two bodies that have mass.)