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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. When a body is falling freely under the influence of gravity, the kinetic energy remains constant.
2. 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 _____
3. Which of the following cannot be called energy?
4. 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?
5. 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)
6. 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.
7. A body is falling freely from rest from a height of 100m. The ratio of kinetic energy after 2 and 5 seconds is _____
8. When a body is falling freely under the influence of gravity, the kinetic energy remains constant.
9. If a solid sphere of mass 200g and radius 20cm is rotating with an angular velocity of 5 rad s-1, its rotational kinetic energy is _____
10. 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 _____
11. 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)
12. Which of the following is correct?
13. 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?
14. An external force is acting on a system, the work done on the system is change in its kinetic energy.
15. What work must be done to stop a bullet moving with a velocity of 2000ms-1 and having a mass of 50g?
16. A particle of mass 1kg is moving with a velocity of 20ms-1 then its kinetic energy is ____
17. At the highest point of a projectile’s trajectory, the kinetic energy is minimum and potential energy is maximum.
18. 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 _____
19. The momentum of a system can be changed without changing its kinetic energy.
20. For an object of mass “m” in motion, its kinetic energy depends on the modulus of its acceleration vector.
21. A pendulum of mass 2kg is given an energy of 200J then the maximum height it will reach is _____
22. Which of the following is correct?
23. 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 _____

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