Question: Two students, Nora and Allison, are both the same age when Allison hops aboard a flying saucer and blasts off to achieve a cruising speed

Two students, Nora and Allison, are both the same age when Allison hops aboard a flying saucer and blasts off to achieve a cruising speed of \(0.800 c \) for 15.5 years (according to Allison).
Neglecting the acceleration of the ship during blastoff, landing, and turnarounds, find the difference in age \(\Delta A \) in years between Nora and Allison when they are reunited. \(\Delta A=\)
Who is younger?
Allison
Nora
Two students, Nora and Allison, are both the same

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