1. A planet orbits a star with a period of 275 days and semimajor axis of...

1. A planet orbits a star with a period of 275 days and semimajor axis of 3.4×10^11m. If this planet's eccentricity is zero, what is the mass of the star?

b. Another planet orbits this same star with a period of 453 days. If it's eccentricity is e= 0.43 then how fast is this planet moving at Perihelion? Aphelion?

c. What is the second planet’s Kinetic Energy at Aphelion if it has a mass of 5×10^26 kg? What is it’s potential energy at Aphelion?

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genius_generous answered 2 years ago

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