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The rest energy of a pion is 140 MeV what is the kinetic energy when it moves at 0.80c?
Wiki User
∙ 14y ago
total energy
E=gamma*m*c^2
where gamma = 1/sqrt(1-v^2/c^2)
K=E - mc^2 = (gamma-1)*(Rest Energy)
You know v, and can thus compute gamma, and you know the rest energy.
Wiki User
∙ 14y ago
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