What is force?

  • (noun): (physics) the influence that produces a change in a physical quantity.
    Example: "Force equals mass times acceleration"
    See also — Additional definitions below


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.

Some articles on force:

Knightmare - Life Force
... The life force was a combined clock and progress meter used to track the energy status of the dungeoneer (the main contestant) ... dungeoneer taking 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 ...
Lift (force)
... 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 ...
Force - Units of Measurement
... 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 ...
Royal Australian Air Force Badge
... is composed of the imperial 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) Per Ardua Ad Astra ...
Meteorology - History - Research Into Cyclones and Air Flow
... cell in the mid-latitudes with air being deflected by the Coriolis force to create the prevailing westerly winds. 19th century the 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 ...

More definitions of "force":

  • (verb): Squeeze like a wedge into a tight space.
    Synonyms: wedge, squeeze
  • (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"
    Synonyms: violence
  • (verb): .
    Example: "Move with force, "He pushed the table into a corner"
    Synonyms: push
  • (noun): A powerful effect or influence.
    Example: "The force of his eloquence easily persuaded them"
  • (verb): Do forcibly; exert force.
    Example: "Don't force it!"
  • (verb): Impose or thrust urgently, importunately, or inexorably.
    Synonyms: thrust
  • (noun): One possessing or exercising power or influence or authority.
    Example: "May the force be with you"
    Synonyms: power
  • (verb): Urge or force (a person) to an action; constrain or motivate.
    Synonyms: impel
  • (verb): Force into or from an action or state, either physically or metaphorically.
    Synonyms: drive, ram
  • (verb): Take by force.
    Synonyms: storm
  • (verb): Cause to move along the ground by pulling.
    Synonyms: pull, draw
  • (noun): Physical energy or intensity.
    Example: "He hit with all the force he could muster"
    Synonyms: forcefulness, strength
  • (noun): Group of people willing to obey orders.
    Example: "A public force is necessary to give security to the rights of citizens"
    Synonyms: personnel
  • (noun): (of a law) having legal validity.
    Synonyms: effect

Famous quotes containing the word force:

    His [the President’s] office is anything he has the sagacity and force to make it.
    Woodrow Wilson (1856–1924)

    The mind is the terriblest force in the world, father,
    Because, in chief, it, only, can defend
    Against itself. At its mercy, we depend
    Upon it.
    Wallace Stevens (1879–1955)

    What I am anxious to do is to get the best bill possible with the least amount of friction.... I wish to avoid [splitting our party]. I shall do all in my power to retain the corporation tax as it is now and also force a reduction of the [tariff] schedules. It is only when all other efforts fail that I’ll resort to headlines and force the people into this fight.
    William Howard Taft (1857–1930)