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.
Read more about Force.
Famous quotes containing the word force:
“Men have two ways of righting their wrongs, by force and by the ballot. Both are denied to women, one by nature, the other by man.”
—Ida A. Harper 1851–1931, U.S. women’s magazine contributor. Fireman’s Magazine, repr. In The Woman’s Magazine, pp. 423-5 (May 1887)
“America does not concern itself now with Impressionism. We own no involved philosophy. The psyche of the land is to be found in its movement. It is to be felt as a dramatic force of energy and vitality. We move; we do not stand still. We have not yet arrived at the stock-taking stage.”
—Martha Graham (1894–1991)
“Taking men into the union is just the kindergarten of their education and every force is against their further education. Men who live up those lonely creeks have only the mine owners’ Y.M.C.As, the mine owners’ preachers and teachers, the mine owners’ doctors and newspapers to look to for their ideas. So they don’t get many.”
—Mother Jones (1830–1930)