Question

What laws did Kepler state that are still in use today? A) The law of gravity and the law of magnetism

B) The law of relativity and the law of conservation of energy
C) The law of orbits, the law of areas, and the law of periods
D) The law of attraction and the law of inertia

Answer 1

Kepler stated three laws of planetary motion that are still in use today: the law of orbits, the law of areas, and the law of periods.

Step-by-step explanation:

Kepler stated three laws of planetary motion that are still in use today. These laws are all related to the behavior of planets in their orbits. The laws are:

1. The law of orbits: Planetary orbits are ellipses with the Sun at one focus.
2. The law of areas: In equal intervals, a planet's orbit sweeps out equal areas.
3. The law of periods: The relationship between the orbital period (P) and the semimajor axis (a) of an orbit is given by P² = a³.

These laws have played a major role in our understanding of planetary motion and continue to be used in the field of astronomy.