Question

Which of the following statements or expressions is most nearly associated with Kepler's First Law of Planetary Motion? (2 points)

P2 = A3
Planetary orbits are in the shape of an ellipse.
A planet moves fastest when it is farthest from the sun.
The distance to a planet is proportional to the time it takes the planet to complete an orbit.

Answer 1

Planetary orbits are in the shape of an ellipse.

Answer 2

Option (1) and (2)

Step-by-step explanation:

There are three laws of planetary motion.

1. Law of orbits: All the planets revolve around the sun in an elliptical orbit and sun is at one focus of the elliptical path.

2. Law of Areas: The planets sweeps out equal areas in equal interval of time,i.e., areal velocity remains constant.

3. Law of Period: The square of the time period of a planet is directly proportional to the cube of length of semi major axis.