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Re: why pseudowork (NOT)

Yes, Brian, you describe what should happen on the air
track. But how to make this happen? The question was
practical, not theoretical.

brian whatcott wrote:

Linear momentum before is 2 x 1 and 1 x -1 kg m/s
Linear momentum after is 2 x 0 and 1 x 1 kg m/s

Or is it?