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How fast must a pion be moving on average to travel 32 m before it decays? The average lifetime, at rest, is $2.6 \times 10^{-8} \textrm{ s}$.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$2.92 \times 10^8 \textrm{ m/s}$

Giancoli 7th Edition, Chapter 26, Problem 15


Chapter 26, Problem 15 is solved.

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