Question

what is the magnitude of the state of rest​

Answer 1

Answer:

The body at rest must have energy content equal to: Erest=E0=mc2 E rest = E 0 = mc 2 . The general expression for the kinetic energy of an object that is not at rest is: KE=mc2−m0c2 KE = mc 2 − m 0 c 2 , where m is the relativistic mass of the object and m0 is the rest mass of the object.