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Re: [Phys-L] Impossible vehicles.

Here's the directly upwind version of a similar vehiclehttps://www.wired.com/2012/07/wind-powered-car-upwind/?redirectURL=https%3A%2F%2Fwww.wired.com%2F2012%2F07%2Fwind-powered-car-upwind%2F

On Wednesday, June 2, 2021, 01:09:42 PM CDT, Brian Whatcott <betwys1@sbcglobal.net> wrote:

I know of two vehicles that give rise to invective from physics professors: The sand-yacht that rolls directly down wind at twice the speed of the wind
https://www.youtube.com/watch?v=jyQwgBAaBag




Couldn't find a video of a toy boat with a big air propeller driving a small water prop directly upwind.But they exist!
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