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

  • question_answer
    Mechanical energy of a system is equal to _____

    A) \[mgh+\frac{1}{2}m{{v}^{2}}\]                      

    B) \[mg+m{{v}^{2}}\]

    C) \[mgh+\frac{1}{2}m\]   

    D)        \[mgh+\frac{1}{2}{{v}^{2}}\]

    E) None of these

    Correct Answer: A


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