Why You Can Never Reach the Speed of Light: A Visualization of Special Relativity, or if youre reALLY pissed,
Serious discussion
E=MC^2 , Energy = Mass x Speed of light ^2.
From memory increasing energy accelerate mass actually increases that mass requiring more energy so the amount of energy i think in this instance would be infinite.
that's more or less it hence no body with a mass can exceed the speed of light
Cause and effect over, for every action there is an equal and opposite reaction. [bigthink.com]
That's just Newton's third law of motion and has nothing to do with the speed of light