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For most pairs of surfaces, the coefficient of kinetic friction compared with the static one is:
ABigger
BEqual
CDouble
DSmaller
Answer & Solution
Correct answer: D. Smaller
1. Starting a stuck object moving takes the largest push.
2. Keeping it sliding needs less.
3. So the kinetic coefficient is smaller.
_Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._
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