If you travel faster than light, could you look back and.
Although Einstein's theories suggest nothing can move faster than the speed of light, two scientists have extended his equations to show what would happen if faster-than-light travel were possible.
Faster-than-light (also superluminal or FTL) communications and travel are the conjectural propagation of information or matter faster than the speed of light. The special theory of relativity implies that only particles with zero rest mass may travel at the speed of light. Tachyons, particles whose speed exceeds that of light, have been hypothesized, but their existence would violate.
Light waves change speed when they pass across the boundary between two substances with a different density, such as air and glass. This causes them to change direction, an effect called refraction.
Another example is, if a bug flies across the beam of a movie projector, the speed of its shadow is proportional to the distance to the screen: in principle that distance can be as large as you like and hence the shadow can move arbitrarily at a high velocity. Note: The shadow of the bug moves across the screen at a velocity greater than c, provided the screen is far far enough away. Its true.
You cannot go at the speed of light so the question is hypothetical. Hypothetical questions do not have definitive answers. Only massless particles such as photons can go at the speed of light. As a massive object approaches the speed of light the amount of energy needed to accelerate it further increases so that an infinite amount would be needed to reach the speed of light. Sometimes people.
As you approach the speed of light with your headlights on, however, you would still measure the light beam racing away from your car at 186,000 miles per second (c). A 'stationary' observer watching this happen, though, would not then measure the beam's speed at almost twice c. Relativity says that all observers always get the same measurement for c.
For a particle which is created travelling slower than the speed of light, the speed of light is the fastest possible speed. The reason is that, in order to accelerate an object, you need to use energy. The more massive (or “heavier”) an object is, then the more energy it takes to accelerate it. You understand this well, as it is easier to throw a ball at 50 kilometers per hour than it is.