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Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
26
Special Theory of Relativity
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26-4 and 26-5: Time Dilation, Length Contraction
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26-7: Relativistic Momentum
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26-9: Mass and Energy
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26-10: Relativistic Addition of Velocities
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Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 10
Q

A star is 21.6 light-years from Earth. How long would it take a spacecraft traveling 0.950c to reach that star as measured by observers:

  1. on Earth,
  2. on the spacecraft?
  3. What is the distance traveled according to observers on the spacecraft?
  4. What will the spacecraft occupants compute their speed to be from the results of (b) and (c)?
A
  1. 22.7 y22.7 \textrm{ y}
  2. 7.10 y7.10 \textrm{ y}
  3. 6.74 ly6.74 \textrm{ ly}
  4. 0.950c0.950c
Giancoli 7th Edition, Chapter 26, Problem 10 solution video poster
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