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What is Friction?

What is Friction?. Friction is a force that pushes against any force. Friction slows things down and usually pushes backwards against the force. Useful and Not Useful Friction.

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What is Friction?

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  1. What is Friction? Friction is a force that pushes against any force. Friction slows things down and usually pushes backwards against the force.

  2. Useful and Not Useful Friction USEFUL: This is a car that is breaking and cars rely on friction to slow down. The friction slows the wheel and bring the car to a stop. NOT USEFUL: When a smooth surface (eg. Wet road of a wet footpath) surface and another smooth surface are sliding on each other there is not much friction causing someone to fall of something to slide. USEFUL: This is a pole with grip on it and this is a rough surface and when combined with a smooth surface (eg a hand) there is a lot of friction therefore the pole is not dropped.

  3. Reducing Friction By putting oil in a car it creates less friction as there is less ‘grip’. By scrubbing away on the rough ice the amount of friction is reduced.

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