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Special relativity

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The proper mean lifetime of subnuclear particles called pions is 2.6 × 10 ^-8 seconds. A beam of pions has a speed of 0.72 c in a laboratory.

The speed of light is 2.998 × 10 ^8 m/s.

In the reference frame of the pion, how far does the pion travel in a typical lifetime of 2.6 × 10^ -8 seconds? Answer in units of m.

What is this distance in the laboratory's frame? Answer in units of m.

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SOLUTION
In the frame of reference of pion (i.e. as measured by an observer stationary with respect to the pion), its ...

Solution Summary

The expert determines how far the pion travels in a typical lifetime. The distance in the laboratory frame is computed.

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