Multiple choice

Which of the following statements is incorrect about friction?

  1. It is a force that is created whenever two surfaces move or try to move across each other.

  2. It always opposes the motion or attempted motion of one surface across another surface.

  3. It is dependant on the texture of both surfaces.

  4. It is dependant on the amount of contact force pushing the two surfaces together (normal force).

  5. It increases with the smoothness of surfaces.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yes, it is an incorrect statement. Friction decreases with the smoothness of surfaces.

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