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प्रश्न
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
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उत्तर
Frictional force (friction)
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Friction always
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Assertion: Friction always opposes the motion.
Reason: Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
