RMS Than Most Probable

It seems that $v_{rms}$ is more relevant than $v_p$,

multiple impact generates the neeeded $KE$ input to the system that averages (root-mean-squared) to $v_{boom}$.

In cases where $v_{boom}$ is generated directly, for example a concussion charge down a sealed tube full of water or ice, the exact speed of the explosive wave front equals to $v_{boom}$ of the material used.  This would be an invention that makes mining, excavations, demolitions and other construction explosions cheap.

Happy New Year 2017