Question

What causes friction? In which direction does it acts?​

Answer 1

Answer:

the friction caused by the interlocking of irregularities in the surface of the two objects which are in contact with each other.

the force of friction acts in a opposite to the direction in which an object moves.

hope it's helps you

Answer 2

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Friction is a force which resist the motion. It is caused by the roughness of surface areas.

Friction acts in the opposite direction of a moving objects.

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$\large{\boxed{types}}$

Friction are of three types :

• Static friction

• Rolling friction

• Sliding friction

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Effects of friction

• It helps us in walking

• It helps us in writing

• It causes were and tere

• It produces heat

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Ways to reduce friction

Friction can be reduced by the following ways

• By making the surface area smooth.

• By spreading oil.

• By greasing.

• By using ball bearings.

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Ways to increase friction

Friction can be increased by the following ways

• By making the surface area rough.

• By removing the lubricant between the objects.

• By increasing the fluid viscosity.