Alka-seltzer put in water in zero gravity

1 Mar

Alka-seltzer put in water in zero gravity

I thought about this for years throughout middle school so I had to share my explanation. I think it’s because the fan is blowing air at the sail, but attached to the boat, so the fan is not moving away from the boat. It’s hard to explain. If the fan was on a separate board on water with a boat in front of it, sail wide, when the fan turned on the fan and boat would move away from each other because of Newton’s second law (I think). Since the fan and sail are on the same board (boat) all the energy they exert on each other is useless and moves to the side because the board is holding them together. Do you get it?

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