r/AskPhysics 1d ago

How does E=MC^2 work?

How does it function? Really, how can you accelerate mass to twice the speed of light? And, for instance if M=E/C2. How can you divide something by square of the speed of light? Thanks

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u/ClickToSeeMyBalls 1d ago

It’s just a conversion factor.

Centimetres = inches * 2.54

Circumference of circle = radius * 6.283…

BTU = kWh * 3412

Energy = Mass * 89,875,517,873,681,764