If you are on earth, and there is a planet 2 lightyears away, and you got into a fast buggy and got there in 1 lightyear,could you look back and see youself comming?
2007-01-04 04:13:07 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
To wit: a lightyear is a distance, not a measurement of time. You can't arrive at a place "in one lightyear..." You can, however, arrive at a place "one light year from here." Basically, what you're saying is that you'd like to have travelled two lightyears in the time of only one year (or, at twice the speed of light).
Theoretically, if you could do this, then yes, you could look back and see any light emanating off of where you came from. Same thing with teleporting large distances... if you could go *poof* here to there, then you could look back and see light coming from where you were.
Your case, however, is impossible. Light speed is the speed limit for our universe. As any masseous object accelerates, it gains mass. The closer to the speed of light the more mass gained. Since F = ma, the amount of force goes up each time you get faster and faster, until the mass hits infinite (at the speed of light) which basically means it would take an infinite force to accelerate the object to that speed... requiring more energy than contained in the entire universe. Of course, as you neared infinite mass the accelerating particle(s) would suck in the entire universe and destroy everything and everyone anyway.
2007-01-04 07:42:04 · answer #1 · answered by promethius9594 6 · 0⤊ 0⤋
A lightyear is the distance light can go in one year. Assuming you mean it will take only one year to go this distance (not a lightyear as this is a distance not a speed), then you are traveling at twice the speed of light. For reasons I can´t explain you can´t go faster than light!
It´s impossible!
2007-01-04 04:54:39 · answer #2 · answered by herbavoria 2 · 1⤊ 0⤋
The light particles that travel thru space are the fastest moving particles in the universe relative to their location in space , their speed does vary ; nethertheless, relatively no other mass structures (including a fast buggy)can moves as fast without breaking up into its structural components.
2007-01-04 04:26:47 · answer #3 · answered by goring 6 · 0⤊ 0⤋
in spite of the fact that i discover Sasuke a greater interesting character, Goku might easily win because of the fact the context of Dragonball is ridiculous -- those characters are able to destroying PLANETS and doing prompt teleportation. Goku could merely teleport out to the limitations of the ambience and blow up the planet that Sasuke is residing on. Yeah, lame. and that i'm asserting this impartial. i comprehend the two anime the two nicely, and Dragonball replaced into made with ridiculous powers whilst in comparison with relatively some different anime. the main exciting element in the conflict could be Sasuke's use of Sharingan on Goku. All in all, Goku might win yet Sasuke is a greater bada** character. =/
2016-10-19 11:17:14 · answer #4 · answered by bridgman 4 · 0⤊ 0⤋
No, the reason would be that no light could reflect off your "buggy" due to the speed at which you absorbed all light directly in front of you and outran all light behind you! Good question, hope my answer made sense.
2007-01-04 04:34:06 · answer #5 · answered by bailingwirewillfixit 3 · 2⤊ 0⤋
It is impossible to go the speed of light. As you approached c (speed of light) the extra energy you are putting in to go faster than c would be turned into mass.
2007-01-04 04:21:43 · answer #6 · answered by E 5 · 0⤊ 0⤋
It's not.
And no one knows for sure.
2007-01-04 04:18:17 · answer #7 · answered by Barrett G 6 · 0⤊ 1⤋