Had a question on a physics test, a person is at rest on a frictionless surface and can not throw anything, can they move?
I said yes, by "swimming" against the air and got docked because "it wouldn't generate enough force."
So that makes me wonder, how much force can a human generate by flapping their arms?
Edit: So it will be the mass of the air moved times the velocity it is moved at, i.e.: the momentum created in the air. This is going to be related to the size, shape, and velocity of the arm, but where do I go from here to figure out how to calculate this?