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

  • question_answer
         A car is moving with uniform velocities; 18 km/h, 36 km/h, 54 km/h and 72 km/h at some intervals. Find the KE of the boy of 40 kg sitting in the car at these velocities. Draw a graph between the KE and the velocities. Also find the nature of the curve.

    Answer:

      At, At At, The graph between the KE and the velocities is shown below   The graph is parabolic curve, because KE


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