Question

1. Fill ir the blanks: -



1.A friction force always tends to................. the motion of the body.
2. Friction is caused by the
............on the surface in contact.
3. Rolling friction is less than........... .
4.Soul of the shoe is usually grooved to..........the friction.
5. A flying machine offering the least friction force should be............... .
6. The friction force exerted by the fluid is called.......... .
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Answer 1

Explanation:

1. opposite

2. roughness

3.sliding friction

4. increase

5.

6. drag or fluid friction