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Question
2 Imagine
that you're kidnapped by aliens and
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transported
to a distant world in a different solar system.
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They
will release you if you show your understanding of
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orbital
dynamics. There is a planet with a period (year) 8
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times
longer than the planet you are on. How much further
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away
is it from the local sun?
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a.2
times as far. b.4 times as far. c.8 times as far.
d.16
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times
as far. e.32 times as far.
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Key is to use KEPLER’S 3rd Law, period
squared equals
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radius cubed. R = period2/3
= 82/3 = 4
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