Certified badass Ata from Samurai 8 decides that supersonic and wall level is too pitiful and thus decides to raise the verse to another level.
unfortunately we never see the asteroids full size so I am going to use an estimate using the wikipedia page: https://en.wikipedia.org/wiki/Asteroid
Here in the characteristics section we are giving a full list of asteroids and their sizes with number of asteroids of each size. I would find an average using the list.
using this list I got an average of 207.97181724325632842368756536071m
using this:https://www.brighthub.com/science/space/articles/64710.aspx giving me an average meteor speed of 25km/s and the density I can get its mass and thus its KE.
we are given 3 asteroid densities: 1.38, 2.71, and 5.32 g/cm^3 depending on asteroid class. since we dont know which I would use an average here too. Giving me 3.136 g/cm^3 or 3136kg/m^3
I would assume it was a sphere for simplification purposes.
thus is mass is 118187198426.36537400070478778661kg
calcing for KE = 36933499508239179375.220246183316 joules or 3.69e^19 joules 6-C. Island level
casual island level feat.