They put on a scary face and scares their obstacles away. They have sharp stomachs which help them cut through the water.
the special adaptions are for steering and swimming.
Nowhere. A photon must travel at the speed of light so it starts with that speed when it is created. This is the origin of the theory of special relativity.
Leptons have mass.According to special relativity, no particle with mass can travel at or faster than the speed of light. It would take infinite energy to do so.
ok the special thing about a silver surfboard is that it gives you more speed for example if you are doing survival mode the silver surfboard gives you more speed and a better chance of beating survival mode!
Various reasons, most of them related to the Special Theory of Relativity. 1. To speed something up so that it even reaches the speed of light (from an initial speed that is slower than light) would require infinite energy. (However, this doesn't preclude hypothetical particles that ONLY travel faster than the speed of light.) 2. If it is were possible to travel faster than the speed of light, it would also be possible to travel to the past. This is due to the definition of "simultaneity" in the Special Theory of Relativity. If you ever read stories about time travel, you would know that time travel may result in many contradictory situations, so it seems doubtful at the least.
Almost all of them. The question is, what bullets travel SLOWER than the speed of sound? They're called "subsonic" bullets, and special operations units buy them for their silenced guns.
Gravity is believed to travel at the speed of light. This follows from theory, especially the Special and the General Theory of Relativity; I believe there is not yet enough experimental evidence to confirm this speed.
Speed does not travel. The word speed is a general term for velocity.
their speed on land is 401km on land
In free space, radio waves travel at the speed of light. In a material, such as co-ax cable, the speed is much lower, perhaps as low as 0.6 of the speed of light. Special arrangements may lower its speed even further.
15mph
Some particles, like photons and gravitons, are believed to ALWAYS travel at the speed of light. Particles, or larger amounts of matter, that move at a slower speed can't be made to travel at the speed of light - according to the Special Theory of Relativity, that would require an infinite energy.