A particle of mass M moving at speed V

Name: A particle of mass M moving at speed V 2 B)MV 2 /2 C)cMV D)Mc 2 /2 E)cMV/2
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Question

A particle of mass M moving at speed V << c has approximately what total energy? A)Mc² B)MV²/2 C)cMV D)Mc²/2 E)cMV/2

Quizplus · Accepted Answer

The total energy of a particle moving at a speed much less than the speed of light (V << c) is approximately equal to its rest energy, which is given by the equation E = mc^2. This is because the kinetic energy, which would add to the rest energy to give the total energy, is negligible at speeds much lower than the speed of light.

A Particle of Mass M Moving at Speed V