At speeds approaching the speed of light, several things will happen.* Time will pass more slowly for you.
* Distances - in the direction you are moving - will get contracted.
* Your mass will increase.
The factor by which all these things change is the same in all cases: it's the square root of (1 - (v/c) squared), so in this case, the square root of (1 - 0.9 squared).
You cannot.
As long as the light remains in the motor oil, nothing happens to its speed.
It moves at a slower speed!
They'll leave your car at the speed of light, and when that light passes anybody, they'll measure the speed of the light as it passes them to be the speed of light.
80% of the speed of light in vacuum is 239,833,966.4 meters per second.
The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.
The speed of light slows down.
As long as the light remains in the motor oil, nothing happens to its speed.
It moves at a slower speed!
80% of the speed of light in vacuum is 239,833,966.4 meters per second.
They'll leave your car at the speed of light, and when that light passes anybody, they'll measure the speed of the light as it passes them to be the speed of light.
The speed increases.
The speed decreases.
I'm afraid nothing happens to the speed of light ever. Also "air" is consider'd a gas.
Even at modest %'s of the speed of light objects start to radiate their energy away in Gravitational Waves. So it is very expensive to approach the speed of light when most of your effort is just radiated away.
It's 1/0.8 = 1.25
The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.
it travels at c (speed of light in a vacuum)