1. Friction is a (a) non-contact force (b) contact force (c) magnetic force (d) electrostatic force
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31
Explanation:
(b) because contact force is a force which requires a contact to occur and friction is a force which always opposes the motion of one body over another body .It acts between two surfaces which are in contact with each other. since friction arises when two bodies are in contact .so friction is a contact force.
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Answer:
contact force ...hope it helps u
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