Answer :

hot29
FRICTION is the opposing force created whenever two surfaces move or try to move over each other.
FRICTION is used while -1)walking -there is friction between our legs and ground
                                      2)writing- there is friction between pencil and paper 
                                      3)Driving- there is friction between the tire and ground
sami99
Friction is the resistance experienced by an object or surface when moving over one another. It is contact force. We use it as:
- We use friction while walking, friction between our foot and ground helps us in   walking. - Friction helps us to write too. Friction acts between pen and paper.
- Wood is cut because of the friction caused by the axe.
- We also use friction while opening the lids of jars, caps of pens , etc.

:)

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