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
26-7: Relativistic Momentum
26-9: Mass and Energy
26-10: Relativistic Addition of Velocities

Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 4
Q

What is the speed of a pion if its average lifetime is measured to be 4.40×108 s4.40 \times 10^{-8} \textrm{ s}? At rest, its average lifetime is 2.60×108 s2.60 \times 10^{-8} \textrm{ s}.

A
2.42×108 m/s2.42 \times 10^8 \textrm{ m/s}
Giancoli 7th Edition, Chapter 26, Problem 4 solution video poster
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