It would make Jane the most powerful because she got it done faster than Dylan did.
I'm in middle school, but I think I know the answer, I am sorry if I am wrong.
It's D
Answer:
A
Explanation:
The greatest concentration of atomic mass is in the nucleus because it is made up of protons and neutrons. The electrons surrounding the nucleus don't have as much mass as protons or neutrons.
Hopefully this helps...
KE = 1/ 2 * 1252 * 144
as KE = 1/2 * m * v ^2
= 90144 J