have u ever wonder how the earth maintained its spin? according to relative movement theory..a moving object will eventually reduce its speed and stop at the end..but why not the earth and other planets? what kept them moving constantly?
2006-09-20 21:19:24 · 10 answers · asked by atokboy 2 in Science & Mathematics ➔ Astronomy & Space
please share..there got to be some scientific explanations here..
2006-09-20 21:40:37 · update #1
i must be stupid to mentioned about relative movement theory in the first details..please forgive if i made mistakes..it should refer to the newtons first law, am i right? so please share more with me..
2006-09-20 22:23:41 · update #2
For an object to change state of motion (eg. stop) an external force needs to be applied as per Isaac Newton. In our environment this is very evident with friction weather air or any other it will stop anything eventually. However in space there is no friction or any other external force that could have an effect to the rotation of the earth. Thus the earth will keep on moving slowly.
ps: there existis no such thing called relative motion theory
2006-09-20 22:19:42 · answer #1 · answered by Sporadic 3 · 1⤊ 0⤋
Newton's first law says that an object in motion will tend to stay in motion unless acted on by a force. In every day life there is always a force from friction with the air or ground that is slowing everything down. Ice skaters can slide much longer than people just sliding on the floor because friction on the ice is less than on the ground, but even on the ice there is some friction and the sliding slows gradually. But in outer space, with no air and no ground, there is no friction, so the motion never slows down.
2006-09-21 09:56:05 · answer #2 · answered by campbelp2002 7 · 0⤊ 0⤋
I don't know where you tripped on that "relative movement" theory, but it is wrong. Newton's laws state that a body in motion maintains that state of motion, absent an external force. The earth revolves around the sun, maintaining its motion in magnitude but the direction changes because of the sun's gravity. Since there is no force to slow the revolution down, it continues indefinitely.
2006-09-21 05:21:39 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I've never heard of the "relative movement theory".
Try using Newton's first law instead
2006-09-21 04:26:57 · answer #4 · answered by Demiurge42 7 · 0⤊ 0⤋
Actually an object will maintain is speed unless it is acted upon by another force, since there is no friction in space there is nothing to stop it, Unless the earth is hit bya large comet it will keep going
2006-09-21 12:59:07 · answer #5 · answered by Spaceman spiff 3 · 0⤊ 0⤋
The earth dosen`t experience any resistance so is not being slowed down. Any other object such as, space junk or meteorites don't have the mass or speed, and hence energy, to change the earth`s course.
2006-09-21 05:23:40 · answer #6 · answered by LenV 2 · 0⤊ 0⤋
There's nothing to slow them down. The gasses in interplanetary space are so diffuse that they might as well not be there. And any solid objects the Earth collides with are not going to have the energy required to send it falling into the sun.
2006-09-21 04:31:09 · answer #7 · answered by Joseph Q 2 · 0⤊ 0⤋
movement of any planet is an effect of due to resultant pull on it by surrounding objects. Or in otherwords we can say a panet balances the effective pull on it by moving itself.
As long there's an effective pull the planet will keep on moving.
2006-09-21 04:31:42 · answer #8 · answered by ramlal 2 · 0⤊ 1⤋
There is a general Principle of Conservation of Angular Momentum.The anfular momentum can be transferred say by tidal action.
2006-09-21 05:02:52 · answer #9 · answered by Rajesh Kochhar 6 · 0⤊ 0⤋
Either it is a Newtonian phenomena resulting from the Big Bang or it is a complex system of rubberbands.
2006-09-21 06:43:11 · answer #10 · answered by Anonymous · 0⤊ 0⤋