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Work Energy Theorem Application

A car and tru...

Question

A car and truck are moving with same kinetic energy. Equal retarding forces are applied on both of these using brakes. The distances travelled by them before coming to rest:

A

Are equal for both

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B

Is greater for the car

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C

Is greater for the truck

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D

None of the above

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Solution

The correct option is A Are equal for both
As the KE is equal for both vehicles amount of work to be done to stop them is same.
As same F is applied on both vehicles and $W = \to F \cdot \to s$ , they both travel equal distance before stopping

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