Question

21. Explain why, holes are made in hanging banners and hoardings.
observations to experiences which tell us that air exerts pressure.​

Answer 1

The holes are made in hanging banners and hoardings because moving air exerts pressure and can displace or damage things and objects that come in their way so if holes are made in hanging banners and hoardings then air can pass through them and it does not fall down easily.

Answer 2

Answer:

Holes are usually made in hanging banners and hoardings so that high speed wind may pass through them easily without damaging them or bringing them down with its huge force or pressure

Explanation:

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