earth's frame of reference, i
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Transcribed Image Text:The distance to a particular star, as measured in
the earth's frame of reference, is 7.39 ly (1 light
year is the distance light travels in 1 y). A
spaceship leaves earth headed for the star, and
takes 3.94 y to arrive, as measured by
passengers on the ship. 1. How long does the
trip take, according to observers on earth? t
=
y 2. What distance for the trip do
passengers on the spacecraft measure? x
= _ly
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