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A crate slides across a floor and slows down. The force acting against its motion is:
AFriction
BFraction
CFracture
DFrequency
Answer & Solution
Correct answer: A. Friction
1. Two surfaces are in contact and moving past each other.
2. That contact always resists the relative motion.
3. The force is friction.
_Source: OpenStax University Physics Volume 1, Chapter 6, Applications of Newton's Laws._
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