Maria is in a spaceship passing Earth and observes her own heart rate to be 60...
Maria is in a spaceship passing Earth and observes her own heart rate to be 60 beats per minute and her spaceship to be 40 m long. Samir on Earth observes Maria's heart rate to be 36 beats per minute and her spaceship to be ___ long.
a) 24 m
b) 28 m
c) 32 m
d) 36 m
e) 40 m
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Maria is in a spaceship passing Earth and observes her own heart
rate to be 60...
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