varies GREATLY with location altitude. I would throw a guess out there and say that at any second wind speeds anywhere on this planet are from 0MPH to 150MPH, here in Oxnard, CA, USA right now...
No
People can be running walking in an aeroplane. All different speeds.
If what you mean is on the whole scale of the universe and everything then the answer is still no. Everybody on the earth is...
No they are not. There components of speed can be broken down according to size. Everyone is moving around the sun with the Earth at the same speed. But since the rotation of the Earth causes people...