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Question

When the brake of a train is applied, it slows down. Which of the following force is responsible for it?


A

Heat into Kinetic energy

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B

Potential energy into heat

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C

Kinetic energy into heat

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D

Heat into potential energy

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Solution

The correct option is B

Potential energy into heat


A moving train has kinetic energy while in motion. When the brakes are applied, the wheels stop to rotate and starts to slide. The frictional force which is generated between the wheels and the track slows down the train.


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