AP® Physics 1 & 2

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Age of Twins: Relativistic Space Travel

APPH12-EJYMRO

You and your twin sister are currently 17-years-old. Your twin sister gets in a spaceship and travels to a nearby star outside our Solar System, traveling at relativistic speeds. When she returns, you have aged five years.

Which of the following is a possible age for your twin sister?

A

18-years-old.

B

22-years-old.

C

26-years-old.

D

There is not enough information to answer this question.