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ASVAB · Force and Motion

Which of the following statements about friction is correct?

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Correct answer

Friction converts kinetic energy to heat

  1. A Friction only occurs between liquids
  2. B Friction always increases speed
  3. C Friction converts kinetic energy to heat
  4. D Friction is eliminated by rough surfaces

Why this is the answer

Friction converts kinetic energy (motion energy) to thermal energy (heat). When you rub your hands together, friction converts motion to warmth. Friction opposes relative motion between surfaces in contact.
Source: ASVAB MC, Friction

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About this topic: Force and Motion

Force and motion questions cover Newton's laws, friction, gravity, acceleration and momentum, usually as pictures of objects being pushed, pulled, dropped or balanced. Identify every force acting before deciding what the object will do. This is one of 13 Mechanical Comprehension questions on force and motion, each with a full explanation on a single study page.

New to this exam? Our ASVAB exam guide explains the format, scoring, and how to prepare.

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