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4. Now you find your way to Mercury (which people already know a lot about...). How long does it take a 1.5kg rock to fall 1.
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Mmercury = 3.285 x 10²3 kg R = 249.7 km. GM hen 6.676x10 x 3.285 x 1023 (2439.7)’x 109 g » 3.684x 106 x 106 g= 3.684 m/s2 -

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