2006-12-20 18:05:02 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
1st law
the planets move in elliptical orbits around the sun with sun at 1 focus
2nd law
an imaginary line drawn from the sun to a planet, sweeps equal areas in equal interval of time
3rd law
the cube of the average distance(r)of a planet from sun is proportional to the square of it's period of revolution(T)
r*r*r proportional to t*t
2006-12-20 18:12:24 · answer #1 · answered by SAMS 2 · 2⤊ 0⤋
According to Kepler's first law, the planets orbit the sun in elliptical paths, with the sun at one focus of the ellipse. The second law states that the areas described in a planetary orbit by the straight line joining the center of the planet and the center of the sun are equal for equal time intervals; that is, the closer a planet comes to the sun, the more rapidly it moves. Kepler's third law states that the ratio of the cube of a planet's mean distance, d, from the sun to the square of its orbital period, t, is a constant—that is, d^3/t^2 is the same for all planets.
2006-12-21 02:17:40 · answer #2 · answered by anmol_002 2 · 0⤊ 0⤋
The first is that the planets move in elliptic orbits with the sun at one focus.
The second, or “area rule,” states that a hypothetical line from the sun to a planet sweeps out equal areas of an ellipse during equal intervals of time; in other words, the closer a planet comes to the sun, the more rapidly it moves.
The third law is the ratio of the cube of a planet's distance from the sun and the square of the planet's orbital period is a constant and is the same for all planets.
2006-12-21 02:16:02 · answer #3 · answered by cheasy123 3 · 0⤊ 0⤋
Everyone else pretty much summed up the laws, but Kepler actually wrote hundreds of laws on planetary motion. Those three are just the ones we choose to pass on.
2006-12-21 06:23:47 · answer #4 · answered by Biznachos 4 · 0⤊ 0⤋
1.The orbit of a planet is an ellipse with the sun at one of the foci.
2.The line joining the planet and the sun sweeps equal areas in equal intervals of time.
3.The cube of a mean distance of a planet from the sun is proportional to the square of its orbital period .T
i.e. r * r * r / T * T = constant
2006-12-22 06:08:51 · answer #5 · answered by asha 1 · 0⤊ 0⤋
I feel this link below explains the Kepler's three laws very well..
http://home.cvc.org/science/kepler.htm
2006-12-21 06:00:23 · answer #6 · answered by Eshwar 3 · 0⤊ 0⤋
The planet's distance is measured in AUs, I think.
2006-12-21 02:46:40 · answer #7 · answered by Anonymous · 0⤊ 1⤋
one of em is about how in an elipse, if you choose a center point, if you draw a line from that point to the end, every other possible line is related to it somehow...google it!
2006-12-21 02:07:19 · answer #8 · answered by adklsjfklsdj 6 · 0⤊ 1⤋
why r school students flocking around y! answers?. go, study
2006-12-21 02:14:05 · answer #9 · answered by Anonymous · 1⤊ 2⤋