2007-10-20 20:00:18 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
i know its gravity...anything besides that.
2007-10-20 20:01:25 · update #1
Its tangential speed. For a satellite to orbit a planetary body in circular orbit, it must have a velocity perpendicular to the planet gravitational acceleration vector as big as v=sqrt(r x g).
where g is the gravitational acceleration, and r is the satellite distance from the planet.
visit my website to learn more :
http://www.geocities.com/orichalc_of_moon/Special/GPIntro.html
http://www.geocities.com/orichalc_of_moon/Special/GPIntro.html
2007-10-21 02:26:54 · answer #1 · answered by seed of eternity 6 · 0⤊ 0⤋
No, it's not gravity. What keeps a sattelite in orbit is that the Earth falls away underneath it as fast as it falls towards the Earth.
Doug
2007-10-21 03:11:53 · answer #2 · answered by doug_donaghue 7 · 1⤊ 1⤋
Speed. For example you throw a baseball it will eventually fall and hit the earth. Now suppose you throw the ball so fast, but it is stil subject to gravity, it will reach the horizon and keep going because the earth is round and will curve away from the ball.
2007-10-21 03:26:30 · answer #3 · answered by Nate 2 · 0⤊ 1⤋
as tha sattelite moves around the earth it spins and keeps it in it's orbit cooperating with gravity
2007-10-21 03:10:24 · answer #4 · answered by Anonymous · 0⤊ 1⤋
The definition of an orbit is when something is rotating around something else and both falling away and towards that object at the same speed.
2007-10-21 10:37:08 · answer #5 · answered by Ryan P 2 · 0⤊ 0⤋
nothing keeps any thing in space.
they are falling, at a slow phase.
every thing depends on the distance and the mass between any two bodies.
2007-10-21 03:06:11 · answer #6 · answered by Kishore T 2 · 0⤊ 0⤋
gravity and technology
2007-10-21 03:09:47 · answer #7 · answered by I love money 4 · 1⤊ 0⤋
Money!
2007-10-21 03:03:41 · answer #8 · answered by deadkelly_1 6 · 1⤊ 1⤋