9th Class Science Work and energy Question Bank Work Power and Energy Summative Objective Problems

  • question_answer
    The potential energy of a body at a height h is mgh. When it falls to the ground, its K.E becomes

    A) \[\text{2mgh}\]                               

    B) \[\text{mgh}/\text{2}\]

    C)  \[\text{mgh}\]     

    D)  \[\text{mgh2}\]

    Correct Answer: C

    Solution :

      When the potential energy of a freely falling object decreases continuously, then its loss of potential energy is continuously converted into kinetic energy                        


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