Question

1) The force that acting on the opposite direction of a moving object is called ___________.
2) The force of friction is _________ when the rough surface and _________ when the smooth surface is involved.
3) The substance which reduce friction are called ___________.
4) When one body rolls over the surface of another body, the resistance to it's motion is called __________.
5) The frictional force exerted by fluids is also called __________.
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Answer 1

Answer:

friction

less more

lubricant

rolling friction

drag

Answer 2

Answer:

1 . friction

2.high rubbed

3.lubricants

4.frictional force

5.drag

Explanation:

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