# Physics

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Two astronauts, one of mass 61 kg and the other 82 kg, are initially at rest in outer space. They then push each other apart. How far apart are they when the lighter astronaut has moved 12 m?

• Physics -

Their center of mass will remain in the same place (in a coordinate system fixed with respect their initial location), since no external force acts upon them.

• Physics -

it will be smaller than smaller 12 m

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