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  • Which of the following is not used to decrease the force ...
Multiple choice

Which of the following is not used to decrease the force of friction?

  1. Ball bearings

  2. Air cushions

  3. A treaded tyre

  4. Grease

  5. Water

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is the correct answer. A tyre is treaded to increase friction.

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