think and explain
1.some people used to think that a rocket could not travel to the moon because it would have no air to push against once it left the earth atmosphere.we know that idea was mistaken.what force propels a rocket when it is in a vacuum?

Question

think and explain 
1.some people used to think that a rocket could not travel to the moon because it would have no air to push against once it left the earth atmosphere.we know that idea was mistaken.what force propels a rocket when it is in a vacuum?

thor · Answer

its reaction force due to the ejected fuel..

thor · Answer

it has nothing to do with air around, unless u are considering drag against the rocket, in which case the fuel required would only increase to work against the drag