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Mass

A. Einstein
A. Einstein

The quantity mass (m) tells how an object resists acceleration by an applied force. The corresponding unit is kilogram (kg).

According to the German physicist Albert Einstein (1879 - 1955), energy (E) and mass (m) are equivalent. This is expressed in his famous formula E = mc2, where c is the velocity of light.

Related quantities:

Last modified:15 January 2021 9.18 p.m.
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