Question

Explain why holes are made in hanging banners and hoardings.

Answer 1

1. Air exerts forces. Many things can be broken or displaced by high-speed wind.
2. When holes are punched in hanging banners and hoardings, air can travel through, reducing the air pressure applied to the banners and hoardings.
3. Banners and hoardings without openings may shred or come down due to air pressure.
4. As a result, banners and hoardings are punctured.