yes
If there is no wind and the sailboat has no auxiliary engine
It would be, yes, because we need wind for many things, but there is no ethical problem, as it is physically impossible to do this. It can be unethical to use anything faster than it can be replaced, depending on what it is. To do this with trees is unethical, but with coal it is not.
No. Nothing is faster than the speed of light. Even the fastest wind doesn't come close.
Light
depends on if there's wind... otherwise a rowboat is faster than a sailboat
No, not possible.
no
By controlling its flow across the sails: If the boat is light enough, it WILL move faster across the water than the wind does.
by wind force
mind is definitely faster tha wind because it helps to think very fast whereas wind is jut a strong breeze.
it would spin slower
A westerly wind means that the atmosphere is moving faster than the Earth spins.