Question

Why is mass multiplied by the speed of light squared in Einstein's famous equation?

a.
Mass is only converted to kinetic energy
c.
Energy is unstable
b.
Mass isn't conserved like energy is
d.
The energy created is moving at the speed of light

Answer 1

I think it may be A or D not really sure sorry.

Answer 2

The mass multiplied by the speed of light squared in Einstein's famous equation because: The energy created is moving at the speed of light.