Which one of the following is NOT a type of force?
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Gravity
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Friction
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Inertia
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Magnetism
C
Correct answer
Explanation
Inertia is a property of matter that resists changes in motion, but it is NOT itself a force. Gravity, friction, and magnetism are all fundamental forces or interactions. Inertia is described by Newton's First Law but doesn't cause acceleration; forces do.