Question

Explain in brief
1. Kepler's first law
2. Kepler's second law
3. Kepler's third law
4 Newton's universal law of gravitation

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Answer 1

Answer:

Kepler’s laws of planetary motion, in astronomy and classical physics, laws describing the motions of the planets in the solar system. They were derived by the German astronomer Johannes Kepler, whose analysis of the observations of the 16th-century Danish astronomer Tycho Brahe enabled him to announce his first two laws in the year 1609 and a third law nearly a decade later, in 1618. Kepler himself never numbered these laws or specially distinguished them from his other discoveries.

second law

Kepler's second law of planetary motion. A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. Kepler's third law of planetary motion. The squares of the sidereal periods (P) of the planets are directly proportional to the cubes of their mean distances (d) from the Sun

Explanation:

Stated in modern language, Newton's universal law of gravitation states that every particle in the universe attracts every other particle with a force along a line joining them. The force is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.