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

  • question_answer
      Certain force acting on a 20 kg mass changes its velocity from 5  to 2 . Calculate the work done by the force.

    Answer:

                      Given, mass, m = 20 kg Initial velocity, Final velocity, Work done by the force = Change in kinetic energy  = Final kinetic energy - Initial kinetic energy


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