Nothing except electromagnetic radiation uses light speed.
Do you mean a light SPEED ship? Ignoring the possiblity of "warp" technology, which, though potentially faster than light, does not really address the problem of achieving light speed, but circumvents it: As speed increases, so does mass. The increase in mass is imperceptible at the speeds you and I commonly travel, and even at the enormous speeds (but still nowhere near light-speed) achieved by the space shuttle. However, at speeds near light speed, mass increases assymptotically. At light speed, mass is, in fact, infinite. If a ship was attempting to attain light speed, its mass would increase more and more with each additional unit of speed. As it gets closer to light speed, the mass would be so great that no amount of thrust would be able to get it TO light-speed. The mathematical proof of this is somewhat more complicated, but take my word for it - it's impossible.
A asteroid travels at the speed of light.
It can accelerate to light speed, "ridiculous speed," and "ludicrous speed." When going into ludicrous speed, all crew members must use a seat belt for their own safety. Ludicrous speed results in the ship leaving a trail of plaid.
Speed of light in water = speed of light in vacuum/refractive index of water
Constant is the speed of light and as the speed of light cannot change it is 'constant'
no, it is impossible the fastest you can go is 99.9 the speed of light , even if u run on the ship nature will slow u down, if u over come it there is a 99.9% u will destroy the universe. The only thing that can go the speed of light is light.
Time slows down by a factor of 1 / square root of 1- (v2 / c2), where v is the velocity (or speed) of the object, and c is the speed of light.
there are a lot of possible methods to do this but the peoples favourite is faster then light but that is probly impossible. We could use nuclear bombs behind each ship to propel the ship into space like the Orion project
The Concord never got anywhere near the speed of light. Neither did any rocket ship, space probe, satellite, comet, asteroid, meteor, etc.
design speed
Assuming the speed of light in air is already known (it is close to the speed of light in a vacuum), you might check how the light refracts when it changes from air to water (at what angle), and then use Snell's Law.
Speed of light