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Work Energy Theorem

A car and a l...

Question

A car and a lorry both are moving with equal kinetic energies. If equal braking force is applied on both, then before corning to rest:

A

The car will cover a greater distance

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B

Lorry will cover a greater distance

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C

Both will cover the same distance

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D

The distance covered by them will depend only on their respective velocities.

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Solution

The correct option is C Both will cover the same distance
The two moving objects have the same kinetic energy and the brakes equal retarding forces - so they will stop at the same time.
Hence, option C is correct.

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