Famous Equation

[imaginecreate]

I'm curious if there are any mathematicians that could elucidate my question on a very simple equation: E = mc2

What is mass?  I'm sure there's formulas to show what mass is, but I'm not a mathematician, so I'd need it in simple language, please. :)

Peace!

Comments

[manmowerx]

Mass is the property of stuff that makes it hard to move. :)