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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Some articles on force:
... crown mounted on a circle featuring the words Royal Australian Air Force, beneath which scroll work displays the Latin motto (shared with the Royal Air Force ...
... The SI unit of force is the newton (symbol N), which is the force required to accelerate a one kilogram mass at a rate of one meter per second squared, or kg·m·s−2 ... The corresponding CGS unit is the dyne, the force required to accelerate a one gram mass by one centimeter per second squared, or g·cm·s−2 ... The gravitational foot-pound-second English unit of force is the pound-force (lbf), defined as the force exerted by gravity on a pound-mass in the standard gravitational field of 9.80665 m·s−2 ...
... with air being deflected by the Coriolis force to create the prevailing westerly winds ... full extent of the large scale interaction of pressure gradient force and deflecting force that in the end causes air masses to move along isobars was understood ... By 1912, this deflecting force was named the Coriolis effect ...
... A fluid flowing past the surface of a body exerts surface force on it ... Lift is the component of this force that is perpendicular to the oncoming flow direction ... It contrasts with the drag force, which is the component of the surface force parallel to the flow direction ...
... The life force was a combined clock and progress meter used to track the energy status of the dungeoneer (the main contestant) ... too long (Treguard would often tell the team "You're wasting Life Force"), taking "damage" through being attacked by monsters or obstacles, taking the ... In the first five series, the life force was a computer animated image of an adventurer wearing a helmet ...
More definitions of "force":
- (noun): Physical energy or intensity.
Example: "He hit with all the force he could muster"
Synonyms: forcefulness, strength
- (noun): A powerful effect or influence.
Example: "The force of his eloquence easily persuaded them"
- (verb): Force into or from an action or state, either physically or metaphorically.
Synonyms: drive, ram
- (noun): One possessing or exercising power or influence or authority.
Example: "May the force be with you"
- (noun): A group of people having the power of effective action.
Example: "He joined forces with a band of adventurers"
- (noun): An act of aggression (as one against a person who resists).
Example: "He may accomplish by craft in the long run what he cannot do by force and violence in the short one"
- (noun): Group of people willing to obey orders.
Example: "A public force is necessary to give security to the rights of citizens"
- (noun): A unit that is part of some military service.
Example: "He sent Caesar a force of six thousand men"
Synonyms: military unit, military force, military group
- (verb): .
Example: "Move with force, "He pushed the table into a corner"
- (verb): Do forcibly; exert force.
Example: "Don't force it!"
- (verb): Urge or force (a person) to an action; constrain or motivate.
- (verb): Take by force.
- (noun): (physics) the influence that produces a change in a physical quantity.
Example: "Force equals mass times acceleration"
- (noun): (of a law) having legal validity.
Famous quotes containing the word force:
“Teach us to live our lives with purpose and with power
for visions of a better world and for decisions hour;
To choose the way of life, reject the way of death,
until the radiant force of God fills mind and strength and breath.”
—Walter J. Mathams (19th20th centuries)
“Undoubtedly if we were to reform this outward life truly and thoroughly, we should find no duty of the inner omitted. It would be employment for our whole nature.... But a moral reform must take place first, and then the necessity of the other will be superseded, and we shall sail and plow by its force alone.”
—Henry David Thoreau (18171862)
“Awareness of the stars and their light pervades the Koran, which reflects the brightness of the heavenly bodies in many verses. The blossoming of mathematics and astronomy was a natural consequence of this awareness. Understanding the cosmos and the movements of the stars means understanding the marvels created by Allah. There would be no persecuted Galileo in Islam, because Islam, unlike Christianity, did not force people to believe in a fixed heaven.”
—Fatima Mernissi, Moroccan sociologist. Islam and Democracy, ch. 9, Addison-Wesley Publishing Co. (Trans. 1992)