Rest Mass

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Rest Mass

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According to relativistic theory, the mass which a body has when it is at absolute rest. Mass increases when the body is in motion according to

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where m is its mass in motion; m₀ is its rest mass; v is the body's speed of motion; and c is the speed of light. </dd>
Newtonian physics, in contrast with relativistic physics, makes no distinction between rest mass and mass in general. [[/a>|/a> ]]

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use