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Which contact force always acts against the direction of movement? A. spring B. normal C. friction D. impact
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Which contact force always acts against the direction of movement? A. spring B. normal C. friction D. impact

User Jram
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2 Answers

2 votes

friction is the right one

User James Strachan
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7.4k points
4 votes
Friction always acts in the opposite direction to movement so C.
User Sidhuko
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