Question

expalin the kepler's law of planetary motion

Answer 1

Three laws devised by Johannes Kepler to define the mechanics of planetary motion. The first law states that planets move in an elliptical orbit, with the Sun being one focus of the ellipse. This law identifies that the distance between the Sun and Earth is constantly changing as the Earth goes around its orbit...
Kepler's second law of planetary motion describes the speed of a planet traveling in an elliptical orbit around the sun. It states that a line between the sun and the planet sweeps equal areas in equal times.....
Third law. The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. This captures the relationship between the distance of planets from the Sun, and their orbital periods.

Answer 2

Kepler's law1- Every planet revolves around the sun in an elliptical orbit,with the sun at one of the foci.

Kepler's law2- The areal velocity of radius vector of a planet originate from the sun is constant.
or
the radius vector of planet from sun sweeps out equal areas in equal intervals of time.

Kepler's law3- The square of the time period of revolution of a planet around sun is proportional to the cube of the mean distance of the planet from the sun....

These are Kepler's law of planetary motion.....