2. What is the cause of heat generation in the following situations:
(a) We apply brakes on our fast moving car
(b) People often jump up and down to feel warmer in cold weather
help plz
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a)When we apply brakes on fast moving car, the friction is created because of kinetic energy between the tyres and road this heavy friction wears out the tyre and generate heat.
b)While during jumping our blood flow gets fast, hearts getting beating up fast and this cause generation of heat. The increase blood flow causes heat generation
Explanation:
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