If the Earth is 93 million miles from the sun. At that distance it takes 365 days to achieve one orbit."Question" how fast must Earth travel to complete one orbit in 365 days
2007-08-05 19:30:43 · 5 answers · asked by Mr.Total Recall 1 in Science & Mathematics ➔ Astronomy & Space
The sun's diameter is about 109 times that of the Earth.
Mean diameter 1.392×109 m or (8.649×105 miles)
The Earth has to travel at close to 30 km/second in its orbit around the sun.
Avg. orbital speed: 29.783 km/s or (107,218 km/h)
or 66,582.378 mph
Max. orbital speed: 30.287 km/s or (109,033 km/h)
or 67,709.493 mph
Min. orbital speed: 29.291 km/s or (105,448 km/h
or 654,83.208 mph
The orbital speed changes because the sun's orbit is elliptical and it rotates faster as it falls into the sun and slower as it tries to escape the sun. The exact speed of the earth at any point in time requires the use of calculus to determine. That's why rocket scientists have to be so smart.
To escape the Earth's gravity field an object has to be moving faster than 11.2 km/s.
To escape the Sun's gravity from an Earth orbit the object has to be moving faster than 42.1 km/s
2007-08-05 19:41:27 · answer #1 · answered by Dan S 7 · 0⤊ 0⤋
Ignore the sun's diameter. The radius of Earth's orbit is 93 million miles - the added distance from the surface of the sun to the core is insignificant.
"Fast" mean a rate. Assume a circular orbit and find that circle's circumfrance. Then it's X millions of miles/365 days.
Express the answer in miles per hour
2007-08-05 19:43:40 · answer #2 · answered by Anonymous · 1⤊ 0⤋
yup ignore the suns diameter, not needed.
find the distance that the earth would travel around the sun
C = 2 x pi x r
C = 2 x 3.14 x 93,000,000
C = 584,040,000
And because it travels the distance in on year the speed of the earth would be
=584,040,000mls.year (or divide by 365)
=1,600,109mls/day (or divide by 24)
=66,671mls/hour
quite the nifty.
2007-08-05 19:50:33 · answer #3 · answered by placid_acid 2 · 0⤊ 0⤋
Diameter of the Earth. (smallest) Diameter of the solar. Diameter of the Earths orbit. Diameter of the image voltaic device. the area to the closest famous guy or woman from earth. (greatest) i think of u only responded your guy or woman question by means of how
2016-11-11 08:27:39 · answer #4 · answered by ? 4 · 0⤊ 0⤋
868,000 miles.
2007-08-08 12:01:38 · answer #5 · answered by johnandeileen2000 7 · 0⤊ 0⤋