Comments by "" (@josephcoon5809) on "9mm vs 45 ACP, WE END THE DEBATE. The Human Torso Test." video.

  1. Energy is directly proportional to mass, and exponentially proportional to velocity. If you double the mass, you double the energy. If you double the velocity, you quadruple the energy. A 50% increase in mass is a 50% increase in energy. A 50% increase in velocity is a 225% increase in energy.
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