What is the lifetime according to a hypothetical person

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Suppose a pion is moving at a speed of 0.986c, and an observer who is stationary in a laboratory measures the pion's lifetime to be2.7 × 10-8 s.

(a) What is the lifetime according to a hypothetical person who is riding along with the pion?

(b) According to this hypothetical person, how far does the laboratory move before the pion breaks apart?

Reference no: EM13267758

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