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22-10-2021
Physics

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Which of the following statements about friction is FALSE .
1 ) Friction involves objects that are in physical contact .
2) Friction is less if surfaces are very smooth .
3 ) Friction is always in the direction of the motion .
4) Friction is caused by the uneven surfaces of touching objects

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22-10-2021

Friction is caused by the uneven surfaces of touching objects

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