Question

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Answer 1

Answer:

1. if the the surface is smooth then the friction will be less.

2 if the surface is rough then the friction will be more.

3. if the weight of the object is more then we need to apply more force because the friction will be more .

4. friction does not depends in the area of the object.

Explanation:

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Answer 2

Answer:

i. smoothness of surface in contact

Explanation:

Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth. ... It does, however, depend on the magnitude of the forces holding the bodies together.