you get tricked by being told about newtons third law and how the propellant pushes against the body so therefore (equal opposite) has to push the rocket.
but newtons third law ironically proves this to be false if viewed from the other way round, the propellant cannot push against a vacuum (zero force) so in turn (equal and opposite) applies zero force to the rocket/vehicle itself.
can anyone find me a video of a rocket, firecracker or something similar creating force in a vacuum?
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Confused?
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