- #1
Sephiroth2088
- 4
- 0
I have a feeling someone is going to be like "Duhhh" on this one. But I got to thinking.
I recall reading somewhere that the guy that came up with the rocket engine for use in space got an F on his paper because "I think" the professor said that there would be nothing to push back on the rocket in space.
So I got to thinking, I know Einstein said for every action there is an equal and opposite reaction... well.. for example I push a wall, it's pushing back on me with equal force.
However a rocket in space pushes on well.. a vaccuum, a vacuum can push back?
In the same way I know that if I was surrounded by air and waved my arms around in a gravityless room with air inside I would move. But if I was in a space suit in space and did this I feel that I wouldn't move, because their is nothing to push back.
I recall reading somewhere that the guy that came up with the rocket engine for use in space got an F on his paper because "I think" the professor said that there would be nothing to push back on the rocket in space.
So I got to thinking, I know Einstein said for every action there is an equal and opposite reaction... well.. for example I push a wall, it's pushing back on me with equal force.
However a rocket in space pushes on well.. a vaccuum, a vacuum can push back?
In the same way I know that if I was surrounded by air and waved my arms around in a gravityless room with air inside I would move. But if I was in a space suit in space and did this I feel that I wouldn't move, because their is nothing to push back.