4 ms·
> 2 objects move away from one another at slightly more than half the speed of light, ... IIRC, mass grows towards infinity as it approaches the speed of light
by tydok 16y ago
> 2 objects move away from one another at slightly more than half the speed of light, ...
IIRC, mass grows towards infinity as it approaches the speed of light. So that's not possible if the objects have mass.
- ErrantX 16y agoWhich bit are you questioning - making it to half the speed of light (I believe that is entirely possible) or the relative speed being more than the speed of light? If it is the latter; it's perfectly possible. Ultimately it is just mathematics - as pointed out on Wikipedia apparent "FTL" travel is allowed by most models. http://en.wikipedia.org/wiki/Faster-than-light http://en.wikipedia.org/wiki/Faster-than-light
- tydok 16y agoThe first part, making it to half the speed of light. With massless particles is of course possible. My physics is a bit rusty so I can't really argue on this matter :)
- JoeAltmaier 16y agoUnless you change the "size" of the space between them - then they are getting further apart without moving, which is what is happening.
- crazydiamond 16y agoSo are you saying there is a maximum speed which is less than half the speed of light, for objects that have mass. What is that max speed ?? From what i know, a great deal of energy is required to accelerate it, as the speed increases, but its still a finite amount.
- retube 16y agomaximum speed for any object with mass is the speed of light in vacuo. You can't accelerate beyond this as, as you impart more energy to the object, it increases in mass, making it harder to accelerate further. As you approach c the mass tends -> infinite, hence requiring infinite energy to get to c. Objects with no mass on the other hand, all move at c.