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Nature of Physical World and Measurement-2marks; part2

11th Standard

    Reg.No. :


answer the following question:
Time : 00:30:00 Hrs
Total Marks : 10
    5 x 2 = 10
  1. A ball with a velocity of 5 ms-1 impinges at angle of 60° with the vertical on a smooth horizontal plane. If the coefficient of restitution is 0.5. find the velocity and direction after the impact.

  2. A car starts from rest and moves on a surface with uniform acceleration. Draw the graph of kinetic energy versus displacement. What information you can get from that graph?

  3. Can a body have energy without momentum?

  4. What is meant by kinetic energy?

  5. A bullet of mass 50 g is fired from below into a suspended object of mass 450 g. The object rises through a height of 1.8 m with bullet remaining inside the object. Find the speed of the bullet. Take g = 10 ms-2.


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