Explain why a truck or a motor bus has much wider tyres ?
Q. (a) Explain why a truck or a motor bus has much wider tyres ?
(b) Why do we feel lighter when we swim?
Ans. (a) A truck or a motor bus has much wider tyres so that their weight gets distributed on a larger area, thus, reducing pressure.
(b) When we swim, water applies upthrust on us, thus we feel lighter.
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