Which of the following correctly explains Kepler rsquo s first law of Planetary Motion ........

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Which of the following correctly explains Kepler’s first law of Planetary Motion?

All the planets move in elliptical orbits with the sun at a focus

The radius vector from the sun to the planet sweeps equal area in equal time

The square of the time period of a planet is proportional to the cube of the semimajor axis of the ellipse

None of the above

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Explanation:

Kepler’s First law of Planetary Motion States that all the planets move in elliptical orbits with the sun at a focus

Kepler's first law states that the planets travel around the sun in elliptical orbits, with the sun positioned at one of the ellipse's foci. ... He was forced to dispose of the idea of circular planetary orbits, and had to reject the ancient belief that the planets traveled their orbits with a consistent speed.

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