I don't understand how dead downwind faster than the wind

>>9105537
Sounds like perpetual motion. It must have been explained wrong. This usually happens when the exlpainer him/herself doesn't understand the mechanics.

wind turbine still works even if its attached to a car..

how do you think a sailboat works

File: ddwfttw.jpg (5KB, 239x211px) Image search: [Google]

5KB, 239x211px

>>9105537
>dead downwind faster than the wind works
and dead upwind faster than the wind works too

>>9105537
> where does the excess energy come from that makes it go faster than the wind?

The energy required to move an object is dependant of the weight of this object. With the same amount of energy, a car will can way faster than a truck.
Air has a weigh: 1 liter of air at 1 bar weigh 1.2 grams (at sea level)

I don't known how they can go faster than the wind, but the energy is not the problem, there is plenty. The difficulty is to gather this energy.

>>9105537
If you run downwind faster than the wind, the relative wind will be in the opposite direction.

This shit ain't happening.

>>9107300
This would be similar to running in zero wind, off of the energy of the "wind" passing you because you are moving.