Question

2. What's true about the elliptical path that the planets follow around the sun? A. A line can be drawn from the planet to the sun that sweeps out equal areas in equal times. B. A line can be drawn from the planet to the sun that follows the same curve as the ellipse. C. A scalar can be measured from the angle that the planet travels relative to the sun's orbit. D. A vector can be drawn from the center of one planet to the center of an adjacent planet

Answer 1

Answer:

A. A line can be drawn from the planet to the sun that sweeps out equal areas in equal times.

Explanation:

The planetary laws by Kepler define the motion of the planets. The law describes that planets revolve around the sun in elliptical paths with sun at of the focus. The line joining the sun and the planet sweeps equal areas in equal amount of time. The square of period of revolution is proportional to the cube of distance of the planet from the sun.

Answer 2

'A' is Kepler's 2nd law of planetary motion. It's the one to pick.

'B' is true, but so what ? It doesn't show anything.

'C' is nonsense.

'D' is true, but the vector doesn't show anything.