1. While both mass and speed increase the energy in a system, speed seems to make more of an impact.
2. If you double the mass in a system, the kinetic energy doubles. If you triple the mass in a system, the KE triples. It's like a 1-1 situation!
3. If you double the speed in a system, it makes more than double the KE in a system. In fact, it's quadrupled! And if you triple the speed, the KE ends up being 9x the original!