eh, use of newton's laws???

I dunno what u mean by that but none of them work in favor of a giant battleship having such mobility unless it consumes an insane amount of energy that i don't see possible without the use of nuclear power. Apart from speed, even in space it wouldnt make much sense as the mass of the ship would cause serious problems to maneuverabilty. They thrusters would just take up too much juice. The only thing that newton's laws would suggest to increase maneuverability would be to increase the force applied on the ship through thrust.