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Home > Physics > Revision videos > Friction




Friction is created whenever two surfaces rub together. This video explains how friction works, and demonstrates how surprisingly strong a force it can be.

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Key learning points:

  • Friction always acts in the opposite direction to movement, i.e. it opposes the motion of an object.
  • Air resistance is a frictional force which opposes motion through air.
  • Frictional forces can be useful, e.g. to allow car tyres to grip the road or to slow down a falling parachutist.

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