Question

(b) Prove the formula E=mc2​

Answer 1

Proof of Albert Einstein's special-relativity equation E = mc2. E = mc2, equation in German-born physicist Albert Einstein's theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.

Answer 2

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Explanation:

If a force acts on an object at rest (an object on which no other forces are acting) then the speed of the object increases. The formula E =mc² establishes a relationship between the increase E in kinetic energy of the object, the increase m in its mass, and the speed of light c.