Faster than the speed of light...

[Raptor1]

Originally Posted by Hitman

Your light beam would travel at 2x speed of light ... same as when you throw something forward while travelling in a car. The objet has the speed of the car already and then also the extra one you gave it by throwing it.

That's what I thought at the start, but now that I think about it, the light can still move at the speed of light without violating the conservation of momentum. Though if that's the case we might have photons that move at the standard c but have some other ridiculously unreasonable property, like a null or negative wavelength.

Or I could be totally wrong. Not that it matters much, this is sort of the reason moving faster than light is impossible in the first place...