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

  • question_answer
    When a force retards the motion of a body, the work done by the force during retardation is

    A)  zero

    B)  negative  

    C)  positive

    D)  positive or negative depending upon the magnitude of force.

    Correct Answer: B

    Solution :

     When force retards the motion of a body, the work done is negative.


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