Kinetic And Momentum Energy Quiz Questions

32 Questions | Total Attempts: 158

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Chapters Of Physics Quizzes & Trivia

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Questions and Answers
  • 1. 
    Which of the following is not a unit of work? 
    • A. 

      Newton-meter

    • B. 

      Joule

    • C. 

      Kilogram-meter

    • D. 

      Watt-hour

  • 2. 
    An object at rest may have
    • A. 

      Velocity

    • B. 

      Momentum

    • C. 

      Kinetic energy

    • D. 

      Potential energy

  • 3. 
    A moving object must have which one or more of the following? 
    • A. 

      Potential energy

    • B. 

      Kinetic energy

    • C. 

      Rest energy

    • D. 

      Momentum

    • E. 

      B,c,d

  • 4. 
    When the momentum of a moving object is increased, there must also be an increase in which one or more of the following of the object's properties? 
    • A. 

      Speed

    • B. 

      Acceleration

    • C. 

      Kinetic energy

    • D. 

      Potential energy

    • E. 

      A,c

  • 5. 
    The total amount of energy (including the rest energy of matter) in the universe
    • A. 

      Cannot change

    • B. 

      Can decrease but not increase

    • C. 

      Can increase but not decrease

    • D. 

      Can either increase or decrease

  • 6. 
    When the speed of a moving object is halved, 
    • A. 

      Its KE is halved

    • B. 

      Its PE is halved

    • C. 

      Its rest energy is halved

    • D. 

      Its momentum is halved

  • 7. 
    Two ball, one of mass 5 kg and the other of mass 10 kg, are dropped simultaneously from a window. When they are 1 m above the ground, the balls have the same
    • A. 

      Kinetic energy

    • B. 

      Potential energy

    • C. 

      Momentum

    • D. 

      Acceleration

  • 8. 
    A bomb dropped from an airplane explodes in midair. 
    • A. 

      Its total kinetic energy increases

    • B. 

      Its total kinetic energy decreases

    • C. 

      Its total momentum increases

    • D. 

      Its total momentum decreases

  • 9. 
    The operation of a rocket is based upon
    • A. 

      Pushing against its launching pad

    • B. 

      Pushing against the air

    • C. 

      Conservation of linear momentum

    • D. 

      Conservation of angular momentum

  • 10. 
    A spinning skater whose arms are at her sides then stretches out her arms horizontally
    • A. 

      She continues to spin at the same rate

    • B. 

      She spins more rapidly

    • C. 

      She spins more slowly

    • D. 

      Any of the choices could be correct, depending on how heavy her arms are

  • 11. 
    According to the principle of relatively, the laws of physics are teh same in all frames of reference
    • A. 

      At rest with respect to one another

    • B. 

      Moving toward or away from one another at constant velocity

    • C. 

      Moving parallel to one another at constant velocity

    • D. 

      All of these

  • 12. 
    The formula 1/2mv^2 for kinetic energy
    • A. 

      Is the correct formula if v is properly interpreted

    • B. 

      Always gives too high a value

    • C. 

      Is the low-speed approximation to the correct formula

    • D. 

      Is the high-speed approximation to the correct formula

  • 13. 
    A spacecraft has left the earth and is moving toward Mars. An observer on the earth finds that, relative to measurements made when the spacecraft was at rest, its 
    • A. 

      Length is shorter

    • B. 

      KE is less than 1/2mv^2

    • C. 

      Clocks tick faster

    • D. 

      Rest energy is greater

  • 14. 
    The upper limit to the speed of an object with mass
    • A. 

      Depends on the mass

    • B. 

      Corresponds to a KE equal to its rest energy

    • C. 

      Is the speed of sound

    • D. 

      Is the speed of light

  • 15. 
    It is not true that
    • A. 

      Light is affected by gravity

    • B. 

      The mass of a moving object depends upon its speed

    • C. 

      The maximum speed anything can have is the speed of light

    • D. 

      Momentum is a form of energy

  • 16. 
    Albert Einstein did not discover that
    • A. 

      The length of a moving object is less than its length at rest

    • B. 

      The acceleration of gravity g is a universal constant

    • C. 

      Light is affected by gravity

    • D. 

      Gravity is a warping of spacetime

  • 17. 
    The work done in holding a 50-kg object at a height of 2 m above the floor for 10 s is 
    • A. 

      0

    • B. 

      250 J

    • C. 

      1000 J

    • D. 

      98000 J

  • 18. 
    The work done in lifting 30 kg of bricks to a height of 20 m is 
    • A. 

      61 J

    • B. 

      600 J

    • C. 

      2940 J

    • D. 

      5880 J

  • 19. 
    A total of 4900 J is used to lift a 50 kg mass. The mass is raised to a height of
    • A. 

      10 m

    • B. 

      98 m

    • C. 

      960 m

    • D. 

      245 m

  • 20. 
    The work a 300-W electric grinder can do in 5.0 min is 
    • A. 

      1 kJ

    • B. 

      1.5 kJ

    • C. 

      25 kJ

    • D. 

      90 kJ

  • 21. 
    A 150-kg yak has an average power output of 120 W. The yak can climb a mountain 1.2 km high in 
    • A. 

      25 min

    • B. 

      4.1 h

    • C. 

      13.3 h

    • D. 

      14.7 h

  • 22. 
    A 40-kg boy runs up a flight of stairs 4 m high in 4 s. His power output is
    • A. 

      160 W

    • B. 

      392 W

    • C. 

      40 W

    • D. 

      1568 W

  • 23. 
    Car A has a mass of 1000 kg and is moving at 60 km/h. Car B has a mass of 2000 kg and is moving at 30 km/h. The kinetic energy of Car A is 
    • A. 

      Half that of car B

    • B. 

      Equal to that of car B

    • C. 

      Twice that of car B

    • D. 

      4 times that of car B

  • 24. 
    A 1-kg object has a potential energy of 1 J relative to the ground when it is at a height of
    • A. 

      0.102 m

    • B. 

      1 m

    • C. 

      9.8 m

    • D. 

      98 m

  • 25. 
    A 1-kg object has kinetic energy of 1 J when its speed is 
    • A. 

      0.45 m/s

    • B. 

      1 m/s

    • C. 

      1.4 m/s

    • D. 

      4.4 m/s