Question

3. Give reasons for the followings: [3]

(a). A ball rolling on the ground slows down and finally stops.

(b). On a cold, dry day, a child takes two balloons and rubs them against his

sweater. When taken near each other, the balloons repel each other.

(c). It is difficult to burst an inflated balloon with your finger but it becomes easier

with the needle​

Answer 1

Answer:

(a) The force of friction acts against the motion of the ball.

(b)Due to electrostatic force of attraction

(c) Less is the surface area, more is the pressure

Explanation:

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