Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The principle stating that a force acting on a body is equal to the acceleration of that body times its mass, assuming a constant mass. Expressed mathematically, F = ma, where F is the force in Newtons, m is the mass of the body in kilograms, and a is the acceleration in meters per second per second.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics Newton's observation that the
rate ofchange of themomentum of a body isdirectly proportional to, and in the same direction as, thenet force acting on it.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[After Isaac Newton.]
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