Question

What does E=mc^2 mean

Answer 1

What we know by the textbook is that E =
`mc^(2)` is the equation of physics. Simplified, The equation is: "Energy = mass times the speed of light squared.". Our knowledge on physics and that equation understandment determines that A is the correct choice.

Answer 2

E represents units of energy, m represents units of mass, and c2 is the speed of light squared, or multiplied by itself

So I THINK that A is the right answer but i may be wrong.

I hope this helped :)