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Class 11 Physics Practice Test: Work, Energy and Power - Kinetic Energy
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In physics, the kinetic energy of an object is the form of energy that it possesses due to its motion.

Class 11 Physics Practice Test: Work, Energy and Power - Kinetic Energy
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23 Questions

1. Two identical balls of mass “m” are released from rest from a height “h” on two ramps of different inclinations as shown in the figure. Which of the following is true for this scenario? Assume all surfaces to be smooth.
2. For the given diagram, choose the correct statement. Consider frictional forces absent.
3. The kinetic energy of a body is ‘K’. If one-fourth of its mass is removed and velocity is doubled, the new kinetic energy will be _____
4. The momentum of a system can be changed without changing its kinetic energy.
5. Which of the following graphs denotes the variation of kinetic energy with velocity? Assume velocity on the x-axis and kinetic energy on the y-axis.
6. The momentum of a system can be changed without changing its kinetic energy.
7. A pendulum of mass 2kg is given an energy of 200J then the maximum height it will reach is _____
8. A body is falling freely from rest from a height of 100m. The ratio of kinetic energy after 2 and 5 seconds is _____
9. A pendulum of mass 2kg is given an energy of 200J then the maximum height it will reach is _____
10. The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by 5 m/s, his kinetic energy doubles that of the boy’s kinetic energy. What is the initial velocity of the man?
11. For an object of 1kg mass to escape the gravitational force of the earth, the kinetic energy imparted to it from the surface of the earth is approximately _____
12. A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by force of gravity while the particle goes up is given by _____
13. A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by force of gravity while the particle goes up is given by _____
14. What kinetic energy should be imparted to an object of mass “m” to raise it to a height of 1000 meters? (Take g = 10 m/s2)
15. Which of the following is correct?
16. The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by 5 m/s, his kinetic energy doubles that of the boy’s kinetic energy. What is the initial velocity of the man?
17. Which of the following is correct?
18. An external force is acting on a system, the work done on the system is change in its kinetic energy.
19. If mass (m) is doubled and velocity (v) is halved then _____
20. A body is projected up vertically with a velocity of 60 m/s. What percentage of its initial kinetic energy is converted into potential energy after 3 seconds? (Take g = 10 m/s2)
21. A particle of mass 1kg is moving with a velocity of 20ms-1 then its kinetic energy is ____
22. What work must be done to stop a bullet moving with a velocity of 2000ms-1 and having a mass of 50g?
23. For an object of mass “m” in motion, its kinetic energy depends on the modulus of its acceleration vector.

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