Question

give reason for the following
(a) tyres are treaded
(b) luggage trolley has wheels
(c) aeroplanes have streamlined shape​

Answer 1

Answer:

(a) Tyres are treaded because treades and grooves improve their grip on road. This increase the friction to desired value and help us to avoid skidding and slipping.

(b) Luggage trolleys has wheels so we can pull them easily because of reduced friction.

(c) Aeroplanes have streamlined shape to reduce friction and help it to acquire faster speed

Explanation:

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