@
ofajen
Possibly. Ill have to think about it.
To my mind its the same as submarine either going 10mph (om the map) in a body of water with zero current or 0mph (on the map) with 10mph current dead against it. To do that would require the exact same power in either scenario.
I dont think 1/ is relevant. Its like calculating the power of a fence post. Nonsensical. I would however be relevant if it was a ball. What power would it take to maintain position in a 30mph "head"wind? 0w because its not moving (on the map) or the power to overcome the force of the 30 mph wind? If its 0w Im sure you could get a high paying job in an off shore operation :-)
2/ 3/ I believe you are conflating map speed with relative wind speed.