How Is the Classical Energy-Momentum Relation Derived?

Erika Martin
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How is derived the classical energy-momentum relation, E = p^2/2m?

Thanks!
 
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Kinetic Energy = 0.5 * mv^{2}

momentum = p = mv

Kinetic Energy = 0.5 * p * v
Kinetic Energy = 0.5 * p * p/m
Kinetic Energy = 0.5 * p^{2}/m

Kinetic Energy = p^{2}/2m
 
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