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Standard VII

Physics

Kinetic Energy

Assertion :Th...

Question

Assertion :The kinetic energy, with any reference, must be positive. Reason: In the expression for kinetic energy, the velocity appears with power 2.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
KE with any reference must be positive as in its expression velocity appears as a square i.e., with power 2 and mass is never negative.

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Assertion :The kinetic energy, with any reference, must be positive. Reason: In the expression for kinetic energy, the velocity appears with power 2.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for AssertionKE with any reference must be positive as in its expression velocity appears as a square i.e., with power 2 and mass is never negative.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
KE with any reference must be positive as in its expression velocity appears as a square i.e., with power 2 and mass is never negative.