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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 50
Q

An observer on Earth sees an alien vessel approach at a speed of 0.60c. The fictional starship Enterprise comes to the rescue (Fig. 26–13), overtaking the aliens while moving directly toward Earth at a speed of 0.90c relative to Earth. What is the relative speed of one vessel as seen by the other?

Problem 50.
Figure 26-13.
A
0.65c0.65c
Giancoli 7th Edition, Chapter 26, Problem 50 solution video poster
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