planets travel in orbits that are _______ (what shape).Kepler's ______ (which number ?) law of motion relates the shape of a planets orbit with its speed. state this law of motion.

_______________________.
-the square of the period of any planet about the sun is proportional to the cube of the planets mean distance from the sun
-2nd
-all planet move in an orbit , with the sun at one of the two foci
-as a planer orbits the sun , an imaginary line from the center of the planets to the center of the sun sweeps out equal intervals of time
-elliptical
-3rd
-circular
-1st

1 answer

Planets travel in orbits that are elliptical. Kepler's 1st law of motion relates the shape of a planet's orbit with its speed. This law states that:

All planets move in an orbit, with the sun at one of the two foci.

Additionally, Kepler's other laws are as follows:

  • Kepler's 2nd law states that: As a planet orbits the sun, an imaginary line from the center of the planet to the center of the sun sweeps out equal intervals of time.

  • Kepler's 3rd law states that: The square of the period of any planet about the sun is proportional to the cube of the planet's mean distance from the sun.