For example, How does one compare 100 g's for 6 milliseconds to 45 g's for 11 milliseconds. These are two different shock scenarios with different magnitudes and times, so how can I compare them? If I have something that is shock rated at 100 g's for 6 ms does this imply that it will withstand 45 g's for 11 ms? I have tried finding a "shock equivalence" chart or a metric for comparing two shock scenarios but I haven't found anything. I was thinking it may depend on the mass of the equipment that is being shock rated. We have: F=ma v=at Power, P = Fv An energy metric like power may give me a reasonable estimate to compare, but I am just guessing here. Is there a standard way to compare two scenarios? A chart or equation would be nice.. Thank you for the help!