YES
But ideally, NO.
Explanation:
Ideally, the calculated average speed should NOTinclude stopped time.
But on a device like a GPS, time spent stopped IS included in your average speed,
thus lowering it significantly.
The speed of light in vacuum is 299,792,458 meters per second, and that's not an average. That's what it always is.
About 2/3 its speed in a vacuum.
3/4th
There are several different types of glass, and light has a somewhat different speed in each of them. On the average, the speed of light across all typical types of glass is in the neighborhood of 2/3 its speed in vacuum, or around 200,000 km/sec .
Depends on your average speed. Distance = Speed*Time. If travelling at the speed of light, 1.08 billion kilometres. If at the speed of a garden snail, 0.05 kilometers.
The speed of light in a vacuum is 300,000 km/second.
Only if you are a photon. In that case, you always move at the speed of light. If you're not a photon, and have any mass while you're sitting still, and are not moving at the speed of light right now, then you can never attain light speed.
yes.
The speed of light in vacuum is 299,792,458 meters per second, and that's not an average. That's what it always is.
No material object ever moves at the speed of light. The Earth's speed in its solar orbit ... relative to a foolish astronomer sitting on the sun ... is about 29.78 kilometers per second. That's about 0.0001 of the speed of light.
The speed of light in a vacuum is about 300,000,000 kilometers per second. Since light can't travel at any other speed (in a vacuum), that's also the average speed.
About 2/3 its speed in a vacuum.
3/4th
There are several different types of glass, and light has a somewhat different speed in each of them. On the average, the speed of light across all typical types of glass is in the neighborhood of 2/3 its speed in vacuum, or around 200,000 km/sec .
It depends what you are sitting on or in.
The light wave, which is electromagnetic energy, is the fastest wave. The speed of light, which is a physics constant, is the speed of light in a vacuum, and no object with mass can be accelerated to this speed.
No object that has mass when it's just sitting there on the table can move at the speed of light. Photons have zero "rest mass".