Question

why do break drums of a car get heated, when the car moves down a hill at a constant speed?
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Answer 1

Answer:

Hey mate it's your answer

Explanation:

now after applying brake, a frictional force act between automobile and surface, due to this kinetic energy is converted into heat energy. that's why the brake drum of an automobile get heated up while moving down at constant speed.

Hope it helps u.

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