By analyzing E=MC2 dimensionally, we will get these results. kgM/S2 = kg(M2/S2) = kg(m)(m/s2) = kgm/s2(m) = E x distance E != Es where E = energy and s = distance or displacement. What we are seeing here with Einstein's relativity is that energy has a factor of distance or space as well. Is this wrong or can soeone correct me on this, please? Es is no longer energy but something else and should be treated as such, I believe.