If you could travel twice the speed of light would you travel backwards in time?

Question

If traveling at the speed of light means time stops 4 you does that mean that traveling twice the speed of light make you travel backwards in time?

Answer 1

No, because the same theory that says time slows down as you go faster, approaching zero as you approach the speed of light, says that you can't go faster than the speed of light.

So you can either believe that you can go faster than the speed of light or you can believe that time slows down towards zero as you approach the speed of light. You can't believe both.

It's like saying "If I painted everything blue, what would a red ball look like?

Answer 2

I don't think you can ever go back in time and change events, even if you travel faster than light. All you can do is slow time down. For example, everything we see on Earth now happened millions of years ago in space and we only see stars exploding now even if it exploded millions of years ago because the light from it has to travel such a long distance to get to us. But can we stop the star from exploding? (I know that's impossible anyway) No, because it already happened millions of years ago.

Answer 3

According to the theory of general relativity, your speed in space + your speed in time = c (the speed of light). As you can see in this equation, as speed in space approaches c, speed in time approaches zero. Therefore, you are correct in that time stops at the speed of light. However, it is not possible to travel faster than the speed of light.

Anything that has mass can be thought of as impure energy. The purest forms of energy, ie light, can only travel at C. The impurities caused by increased mass (inverse proportion, i.e, E=mc^2) would make it impossible to go faster than light (you would be infinitely massive at such speeds).

Answer 4

there's a diverse regulation in relativity of a thank you to combine relative velocities - you could no longer purely upload them. If an somebody flies by ability of you with a speed V1, and throws a ball forward with a speed V2, the perfect thank you to claculate the fee of the ball with admire to you would be V = (V1+V2)/(a million + V1V2/c^2). notice, that as quickly as V1 and V2 are small, then V1V2/c^2 is in basic terms approximately 0, and can be skipped over, so, you have the common formula V=V1+V2 if so. yet while one or the two one in all speeds are severe, then you definitely won't be able to ignore with regard to the denominator anymore. to illustrate, if the two speeds (or perhaps anybody of them) are "c", then (marvel...) their sum is "c" too. The beam out of your mild would be shifting because of the fact the fee of light with admire to you, besides as to the different inertial observer, inspite of which speed you're passing that observer with. in case you factor your mild backwards, the '+' sings interior the formula exchange to '-' (because of the fact the speeds at the instant are in opposite guidelines): V = (V1-V2)/(a million-V1V2/c^2). you will discover, that, back, as long as any of the speeds is c, the effect is c too.

Answer 5

This is a silly question.
If I was traveling twice the speed of light I would not be able to
use my headlights!
I am not going to drive in the dark!

Answer 6

Forward

Answer 7

Time goes one direction


if you have the right propellant, you can go faster than the speed of light.

in olden days if you went faster than a horse it was thought you would suffer brain injury

Answer 8

I'd go backwards gut i'd have to bring my own weapons and my safety would not be guaranteed because i've only done it once before!

Answer 9

A negative value for time is not possible.

Answer 10

It should. And, of course, I would go back in time.