Question

Give reasons for :

(a) When a carpet is beaten with a stick, dirt comes out of it.

(b) It is difficult for a fireman to hold a hose which ejects large amount of water at high velocity.​

Answer 1

Answer:

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Explanation:

a) If a carpet is beaten with a stick then the carpet begins to move. But, the particles of dust are trying to resist their state of rest. The dust particles remain in a state of rest, while the carpet moves, as per Newton's first law of motion. The particles of dust thus emerge from the carpet.

b) When fireman directs a large amount of water at a high velocity on fire from a hose pipe, they have to hold the hose pipe strongly because of its tendency to go backwards.