User blog comment:Arbington/ME3 Theories/@comment-1903421-20100629141950

How can the Citadel races defeat the Reapers? Bioware's already tipped their hand as to one possible strategy, and all it would cost is one frigate-sized ship per Reaper: set the ship on a collision course with a Reaper and engage the FTL drive.

Once the ship hit the Reaper, the frigate's mass effect core would overload, leaving you with a few thousand tons of mass accelerated to 99.9999+ percent of lightspeed hitting the Reaper's kinetic barriers and internal systems.

Newton is only the *second* deadliest son of a bitch in space -- second to Albert Einstein and his Special Theory of Relativity. If you take a thousand tons of matter moving at that speed, it hits with the force of 1 million tons. The amount of force gets even more ridiculous the closer to lightspeed you get ... and figure that a frigate weighs a lot more than a thousand tons.