# Momentum and Relativistic Energy

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Relativistic Energy and Momentum

Learning Goal: To learn to calculate energy and momentum for relativistic particles and, from the relativistic equations, to find relations between a particle's energy and its momentum through its mass.

The relativistic momentum and energy E of a particle with mass moving with velocity is given by

Part A

Find the momentum in the laboratory frame of reference, of a proton moving with a speed of 0.752.

Part B

Find the total energy E of this proton in the laboratory frame.

Express your answer in millions of electron volts to three significant figures.

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