2. Questions Bank
  3. 9th Class
  4. Science
  5. Work and energy

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

  • question_answer
    A ball weighing \[\frac{1}{2}\] kg has a kinetic energy 1 joule when its speed is:

    A) 1 m/s               

    B) 2 m/s

    C) 3 m/s   

    D)        4 m/s

    E) None of these

    Correct Answer: B

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