Fewpal
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Give examples to show that friction is both a friend and a foe.

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Friction as friend: 

→ We are able to walk because of friction. 

→ Friction between the tip of the pen and a paper allows us to write. 

Friction as foe: 

→ Tyres and soles of shoes wear out because of friction. 

→ Friction between the different parts of machines produces heat. This can damage the machines

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