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So you need to leave something behind in order to go somewhere? But it would only be relative to the thing I left behind? But then there is some "special" relat
by z3t4 7y ago
So you need to leave something behind in order to go somewhere? But it would only be relative to the thing I left behind? But then there is some "special" relativity that applies everywhere?
- phyzome 7y ago> So you need to leave something behind in order to go somewhere? As a definition, no. But no one has been able to figure out reactionless propulsion; as far as anyone can tell, the only way to accelerate in space is to throw something in the opposite direction (matter or light).
- z3t4 7y agoIf you tie a rope to a hammer, then spin it around as fast as you can like a hammer thrower, and drop it. Wouldn't the breaking force propel you in the same direction your let go of the hammer?
- antonvs 7y agoIf you're in zero g and not on a surface with friction to push against, you're not going to be able to do what a hammer thrower can do standing on Earth. But, if you provide some momentum to an object like a hammer and release it, you will move. That goes back to "you need to leave something behind in order to go somewhere."