H3 Time Dilation, Length Contraction

9 Questions | Total Attempts: 98

SettingsSettingsSettings
Please wait...
Time Quizzes & Trivia

Questions on time dilation and length contraction. After a few definitions, then an ongoing question in many parts.


Questions and Answers
  • 1. 
    Define proper time.
  • 2. 
    Define proper length
  • 3. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light.  What is the value to 2dp of the Lorentz factor (gamma)
    • A. 

      1.2

    • B. 

      2.3

    • C. 

      3.4

    • D. 

      4.5

  • 4. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light.  How long will this journey take according to the observer on the earth?
    • A. 

      1111s

    • B. 

      2222s

    • C. 

      3333s

    • D. 

      4444s

  • 5. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light.  Who measures proper time for the journey?
    • A. 

      Observer on the earth

    • B. 

      Pilot of space ship

    • C. 

      Another independent observer

    • D. 

      The cosmic time keeper

  • 6. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light. Calculate the time taken for the voyage according to the pilot of the space ship.
    • A. 

      1111s

    • B. 

      966s

    • C. 

      822s

    • D. 

      733s

    • E. 

      544s

  • 7. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light. Who measures the proper length of the journey from Earth to Planet X?
    • A. 

      Pilot on space ship

    • B. 

      Observer on the Earth

    • C. 

      Independent observer

    • D. 

      Great Galactic time measurer

  • 8. 
    A space 100m long space ship travels to planet X which is a distanace of 6E11m from Earth.  It travels at 90% of the speed of light. Calculate the distnace from Earth to Planet X according to the travelling spaceship?
    • A. 

      6E11m

    • B. 

      3.31E11m

    • C. 

      2.61E11m

    • D. 

      1.42E11m

    • E. 

      1.21E11m

  • 9. 
    Are there any parts of this where you had difficulties, and you need to go over in class?