Question

6. The eraser gets smaller and smaller as you use it more and more. Why?
7. (a) When we rub our palms for a few seconds, they become warm. V
(b) Write any two examples of rolling friction.
8. We use a ramp or wheeled suitcases to transport our heavy lug? ​

Answer 1

Answer:

(a)When two objections comes in close contact with each other a friction is formed .friction produces heat.

(b)Bike wheels.

Soccer ball, basketball, or baseball

(c)because it reduces weight.

Explanation: