9th Class Science Work and energy Question Bank Work, Energy and Power

  • question_answer
    Analyse the given statements and choose the correct option. Statement I: The kinetic energy, with any reference, must be positive. Statement II: The kinetic energy and the square velocity are related.

    A)  Both statement I and statement II are correct and statement II is the correct explanation of statement I.  

    B)  Both statement I and statement II are correct, but statement II is not the correct explanation of statement I.

    C)  Statement I is correct, but statement II is incorrect.

    D)  Statement I is incorrect, but statement II is correct.

    Correct Answer: A

    Solution :

     \[K.E.\] 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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