Question

Energy= mv^2
prove the theory

Answer 1

It is proved through mathematics , unless check out YouTube videos for explanations .

Check out my Website ,http://www.emc2-explained.info/Emc2/Derive.htm#.W6mJa4HhU0M .

Answer 2

$\huge\bf{hey}$

$\huge { \mathfrak{here \: is \: answer}}$

pls see in pic

in this famous equation

e is energy 

m is mass

and c ^2 is speed of light

using this equation 

Einstein showed the relationship between the mass and energy.

and according to the theory of relativity

nothing can travel higher than the speed of light.

which values 299729458m/s



note - here i have taken "c " in place of v
$\huge \boxed{ \boxed{hope \: it \: helps}}$

$\huge{ \mathbb{THANKS}}$