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  5. Work and energy

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

  • question_answer
    A ball is projected upwards. As it rises, there is an increase in its

    A)  momentum   

    B)         retardation

    C)  kinetic energy   

    D)  potential energy  

    Correct Answer: D

    Solution :

     When a ball is projected upwards its velocity decreases and its height increases. Hence, \[K.E.\] decreases whereas \[P.E.\] increases.


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