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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 19
Q

An unstable particle is at rest and suddenly decays into two fragments. No external forces act on the particle or its fragments. One of the fragments has a speed of 0.60c and a mass of 6.68×10−27 kg6.68 \times 10^{-27} \textrm{ kg} while the other has a mass of 1.67×10−27 kg1.67 \times 10^{-27} \textrm{ kg}. What is the speed of the less massive fragment?

A
0.95c0.95c
Giancoli 7th Edition, Chapter 26, Problem 19 solution video poster
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