Multiple-choice Physics Competency Test

15 Questions | Total Attempts: 112

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Competency Test Quizzes & Trivia

To pass this test a score of 80% or higher is needed.


Questions and Answers
  • 1. 
    All of the following require the application of a net force, except?
    • A. 

      To change an object from a state of rest to a state of motion

    • B. 

      To maintain an object in motion at a constant velocity

    • C. 

      To change an objects speed w/out changing its direction of motion

    • D. 

      To maintain an object in uniform circular motion

    • E. 

      To accelerate an object

  • 2. 
    A rocket flies at constant velocity straight up. whats the direction of the net force on the rocket?
    • A. 

      Up

    • B. 

      Down

    • C. 

      Can not be determined w/out knowing rocket mass

    • D. 

      Cant be determined w/out knowing the wind resistance

    • E. 

      None of the previous

  • 3. 
    A hot rod starting at rest and uniformly accelerating covers a distance of 400 meters in 15 seconds. What is the acceleration to two significant figures?
    • A. 

      3.6 m/s^2

    • B. 

      4.4 m/s^2

    • C. 

      2.2 m/s^2

    • D. 

      27 m/s^2

    • E. 

      None

  • 4. 
    A ball is thrown up at 15 m/s, whats the velocity after 3.0 seconds?
    • A. 

      14 m/s up

    • B. 

      14 m/s down

    • C. 

      44 m/s up

    • D. 

      44 m/s down

    • E. 

      None

  • 5. 
    A 20.0 kg block on a smooth horizontal surface is acted upon by two horizontal forces: a force of 20 N acting to the left and a force of 60 N to the right? The acceleration fo the block will be
    • A. 

      3.0 m/s^2 to the right

    • B. 

      4.0 m/s^2 to the right

    • C. 

      40 m/s^2 to the right

    • D. 

      2.0 m/s^2 to the left

    • E. 

      None

  • 6. 
    Which of the following units would be appropriate to describe force?
    • A. 

      Kg*m/s^2

    • B. 

      M/s^2

    • C. 

      Kg/s

    • D. 

      Kg*m/s

    • E. 

      None

  • 7. 
    A 0.15 kg ball traveling with a speed of 50 m/s is brought to rest in a catcher's mitt with an average force of 75 N. What is the maginutde of the impulse exerted by the mitt on the ball?
    • A. 

      75 Ns

    • B. 

      11.3 Ns

    • C. 

      3750 Ns

    • D. 

      7.5 Ns

    • E. 

      None

  • 8. 
    A child plays on a see-saw with her father. The child has a weight of 250 N and is seated 2.5 m from the axis of rotation. Her father balances her when he is seated 0.80 m from the axis. The fathers weight is
    • A. 

      250 N

    • B. 

      500 N

    • C. 

      667 N

    • D. 

      725 N

    • E. 

      750 N

  • 9. 
    A book weighing 10 N is held at rest in the palm of the hand. The reaction to the force of the hand on the book is a force of
    • A. 

      10 N exerted by the Earth on the book

    • B. 

      10 N exerted by the book on the Earth

    • C. 

      10 N exerted by the book on the hand

    • D. 

      0 N

    • E. 

      9/8 m/s^2 in the downward direction arising from the force of the eart

  • 10. 
    A ball is projected upward with an initial velocity of 5 m/s. It will reach its maximum height in approximately
    • A. 

      0.5 s

    • B. 

      1.0 s

    • C. 

      49 s

    • D. 

      2.0 s

    • E. 

      0.0 s

  • 11. 
    If an astronaut landed on a planet that was three times the diameter and three times the mass of earth, how would his weight there compare with that on earth?
    • A. 

      Same

    • B. 

      Three times as much

    • C. 

      One ninth as much

    • D. 

      One third as much

    • E. 

      None

  • 12. 
    Temperature can be described as
    • A. 

      Heat

    • B. 

      A measure of the average kinetic energy of the molecules of a substance

    • C. 

      A fluid that flows between a hot and cold object

    • D. 

      A physical quantity measured in calories

    • E. 

      Energy transfer as a result of a temperature difference

  • 13. 
    • A. 

      Attracts it toward the N pole of the magnet

    • B. 

      Attracts it toward the S pole of the magnet

    • C. 

      Repels it away from the N pole of the magnet

    • D. 

      Repels it away from the S pole of the magnet

    • E. 

      Theres no magnetic force on the charge

  • 14. 
    A current of 2.5 A is flowing through a resistance of 18 Ohms. What is the voltage difference across this resistance?
    • A. 

      1.5 V

    • B. 

      6 V

    • C. 

      45 V

    • D. 

      115 V

    • E. 

      None

  • 15. 
    • A. 

      3 feet from you, but changed in size

    • B. 

      3 feet from you, same size

    • C. 

      6 feet from you, but changed in size

    • D. 

      6 feet from you, same size

    • E. 

      At the point where you are standing, same size