Question

1. Friction opposes the ____ between the surfaces in contact with

each other.

2. The sprinkling of powder on the carom board _____ friction.

3. Frictional force ____ with increase in weight.

4. Is the friction same for all objects? State true / faluse?

II. Answer the following questions. 6M.

5. What are the factors affectiny friction?

6. Why does the match stick catch fire when rubbed on the rough

surface of the box?

7. What is the force of friction?​

Answer 1

Answer:

no)7 answer—Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction is a force that opposes the relative lateral motion of two solid surfaces in contact.