Force
In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. It is measured with the SI unit of newtons and represented by the symbol F. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform. Force can also be described by intuitive concepts such as a push or pull. A force has both magnitude and direction, making it a vector quantity.
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Famous quotes containing the word force:
“We stood talking for some time together of Bishop Berkeleys ingenious sophistry to prove the non-existence of matter, and that every thing in the universe is merely ideal. I observed, that though we are satisfied his doctrine is not true, it is impossible to refute it. I shall never forget the alacrity with which Johnson answered, striking his foot with mighty force against a large stone, till he rebounded from it, I refute it thus.”
—Samuel Johnson (17091784)
“Force was his juices and force was his meat.”
—Zora Neale Hurston (18911960)
“Freedom is a mans natural power of doing what he pleases, so far as he is not prevented by force or law.”
—Marcus Tullius Cicero (10643 B.C.)