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Question

A train and a car travelling with the same kinetic energy, are brought to rest by applying the same force. Which object will travel more distance before coming to rest?



A

The car

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B

The train

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C

Both would require the same distance

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D

Cannot be decided with the given information

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Solution

The correct option is C

Both would require the same distance


The energy of the car and the train are equal. Hence, the work done to bring them to rest will be equal. Work done = force × distance.

Since the forces on them are equal, the distance travelled by them will also be equal.


Physics

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