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karnten07
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Homework Statement
There is a comet that is at a position between the Earth and the sun that has an orbital radius half that of Earth's, this is the perihelion position for the comet. The comet's and Earth's orbits are coplanar. The comet's orbit crosses that of the earth's. When the comet is placed so that it is just crossing the orbit of earth, so at twice the radius it was originally at, how does its position vector change, r?
I assume the origin to be at the center of the sun, so does this just make the position vector twice what it was??