Okay so.
Your statement of energy requirement is likely one.
However what exactly would propel the spaceship? Because if you intend to shoot the ship with the cannon energy is the least of your concerns. Beginning with the enormous amount of interference thanks to magnetic waves basically making all the electronics break. And the speed wouldnt last long enough to break atmosphere.
Now lets say you try to use the cannons to launch stuff down to propel the rocket. That also wouldnt work as reloading them takes time, and likely cant be done fast enough to capitalise on the distance you make.
So it is just worse in practise to a rocket
Latest Answers