9th Class Science Work and energy Question Bank 9th CBSE Science Work and energy

  • question_answer
      A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?

    Answer:

                      A freely falling object just before hitting the ground has maximum kinetic energy. After falling, it rolls on the rough ground and finally comes to rest. The kinetic energy of the object is used up in doing work against friction; which finally appears as heat energy.


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