For many reasons. The simplest one is: [mass] times [speed] does not have
the dimensions of [energy], but [mass] times [speed squared] has.
E = energy e=mc2 (or Engergy (e) equals Mass (m) times the Velocity of Light (c) squared {the speed of light times itself}).
with a lower-case letter 'c', as in E=mc2, where E is energy, m is mass and c is the speed of light. light years maybe.
When travelling a significant portion of the speed of light, you have a lot of energy but you'll be travelling less than the speed of light. This energy must go somewhere, but it cannot go to its velocity; therefore the energy is put into its mass.
Mass at the speed of light in space squared.
'c' in the equation E=mc2 represents the speed of light (in a vacuum).For more information, see Related links below.
E (Energy) equals M (Mass) times C2 (speed of light square)
No. E=mc2 is a formula. Energy equals mass times the speed of light squared.
speed of light
Speed of light.
C = Speed of light, C2 =speed of light squared
plz answer :(
The quantity designated by the letter "c" is the speed of light
E=mc2 means energy=mass multiplied by the speed of light squared.
c is the speed of light in vacuum.
The 'c' represents the speed of light.
c = the speed of light.
E=Mc2 was a way Einstein made up. E=MC2 means energy equals the mass (M) and the C is the speed of light squared.(E=energy,M=Mass,C=speed of light,2=squared)