Question

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Answer 1

Answer:

1) The conclusion is the planet orbits in it's own orbit around the sun

2) for a planet twice as far from the sun as earth the orbital velocity relatively to that of earths is 1/root 2 =0.707.

Answer 2

1.] What is the conclusion about the orbit of planet?

↦ The orbit of a planet is an ellipse with the sun at one of the foci. ( Kepler's 1st law of planetary motion )

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2.]What is the relation between velocity of planet and distance from the sun.

↦ The square of the Period ( velocity ) of revolution of planet around the sun is directly proportional to the cube of the mean ( average ) distance of the planet from the sun ( Kepler's 3rd law of planetary motion )

i.e.,

(Period of revolution)² ∝ ( mean distance of

the planet from the sun )³

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