Johannes Kepler's first law states that "The orbit of every planet is an ellipse with the Sun at one of the foci". An example of this is when a space satellite travels around the Earth in an elliptical orbit.
As far as I know there is no simple proof suitable for this site. You need to know some mathematics including "calculus" and the algebra of "conic sections" .The ellipse is a conic section. Kepler's first law is about planet's having elliptical orbits, of course.
If you really want to get the mathematics you can. Put "Proof of Kepler's laws" into "Google" and try to choose something that suits you. (Don't be surprised if
you can't understand it. It all depends on your education in mathematics.)
Inertia is a sporting example of newton's first law of motion.
One example of scientific law, is The Law Of Gravity.
A theory is an idea system with a lot of evidence to support it--for example, the theory of evolution. A law (in science) is an idea system with proof attached to it--no contradictions--example, the law of gravitation.
An example would be Newton's First, Second, and Third Law of Motion: 1: Every object at rest (in motion) will remain at rest (in motion) unless acted on by an outside force. 2: F=ma 3: Every force has an equal and opposite force back on that force.
Kepler's laws cannot be proven. They are empirical laws not derived from axioms.The answer above is nonsense.Yes Kepler could not prove his laws and had only derived them empirically. But after Newton formulated his Universal law of gravitation, Kepler's laws could and have been proven.The working is quite cumbersome and cannot be repeated in this forum. But if you Google "Keplers Laws Proof" or similar you will find numerous explanations. But be prepared that complete proofs require quite some math skills. To do it rigorously you need Calculus and Vector Algebra.In essence, the first two laws are equivalent to the law of conservation of Angular Momentum (which is the cross product of the position and velocity vectors). The third law calculates the orbital period as a function of semi-major axis of the ellipse and the central mass, basically defining elliptic motion.It is amazing that Kepler was able to formulate these laws empirically (mainly by studying the motion of Mars) without having the physics and mathematics he would have needed, at his disposal.
It is the third law
Kepler's first law says Neptune has an elliptical orbit with the Sun at one focus. The same goes for the other planets.
This is known as Keplers 2nd Law of Planetary Motion. It states that line drawn between a planet and the sun sweeps out equal areas during equal time intervals.
Kepler's second law the law of equal areas.
It is Kepler's first law which says the planet moves in an ellipse with the Sun occupying one focus and the other focus is vacant.
Technically it doesn't precisely fit any of them, but to a first approximation it fits not only each of the planets, but every other orbiting body everywhere.
Inertia is a sporting example of newton's first law of motion.
Newton derived Keplars findings from Newton's Theory of Gravity. Thus, newton 'explained' the basis for Keplars findings and extended them.
Newton's second law of motion.
April 27, 4977 B.C. That was when he once calculated that the universe began. Or, you may mean when he published his Laws of Planetary Motion. He published his first 2 laws in 1609 and his 3rd law around 1619.
Newtons first law
nope