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Why e=mc2?why not e=mc3?
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Why e=mc2?why not e=mc3?

User David Vrba
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Answer:

Because Einstein was verry smart

Step-by-step explanation:

User Jiri Vetyska
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For starters, this question isn’t really about relativity. It’s about energy, and E=mc^2 only makes sense if energy has the units of (mass)*(velocity)^2. So we might as well ask: why is kinetic energy defined as KE = ½*mv^2?
User Jon Catmull
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