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  2. Reactive centrifugal force - Wikipedia

    en.wikipedia.org/wiki/Reactive_centrifugal_force

    In classical mechanics, a reactive centrifugal force forms part of an actionreaction pair with a centripetal force. In accordance with Newton's first law of motion, an object moves in a straight line in the absence of a net force acting on the object.

  3. Reaction (physics) - Wikipedia

    en.wikipedia.org/wiki/Reaction_(physics)

    The forces on ball and player are both explained by their nearness, which results in a pair of contact forces (ultimately due to electric repulsion). That this nearness is caused by a decision of the player has no bearing on the physical analysis. As far as the physics is concerned, the labels 'action' and 'reaction' can be flipped. [4]

  4. Tension (physics) - Wikipedia

    en.wikipedia.org/wiki/Tension_(physics)

    Tension might also be described as the action-reaction pair of forces acting at each end of an object. At the atomic level, when atoms or molecules are pulled apart from each other and gain potential energy with a restoring force still existing, the restoring force might create what is also called tension. Each end of a string or rod under such ...

  5. Force - Wikipedia

    en.wikipedia.org/wiki/Force

    Ideal strings transmit tension forces instantaneously in actionreaction pairs so that if two objects are connected by an ideal string, any force directed along the string by the first object is accompanied by a force directed along the string in the opposite direction by the second object. [43]

  6. Newton's laws of motion - Wikipedia

    en.wikipedia.org/wiki/Newton's_laws_of_motion

    To every action, there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts. [15]: 116 Rockets work by producing a strong reaction force downwards using rocket engines. This pushes the rocket upwards, without regard to the ground or the atmosphere.

  7. Couple (mechanics) - Wikipedia

    en.wikipedia.org/wiki/Couple_(mechanics)

    A couple is a pair of forces, equal in magnitude, oppositely directed, and displaced by perpendicular distance or moment. The simplest kind of couple consists of two equal and opposite forces whose lines of action do not coincide. This is called a "simple couple". [1]

  8. Ireland v England LIVE: Six Nations result and reaction as ...

    www.aol.com/ireland-vs-england-live-latest...

    The battle of the captains between Maro Itoje and Caelan Doris will be worth watching in the context of a Lions year, with the pair shaping as the two contenders to skipper the touring team in ...

  9. Ion association - Wikipedia

    en.wikipedia.org/wiki/Ion_association

    In chemistry, ion association is a chemical reaction whereby ions of opposite electric charge come together in solution to form a distinct chemical entity. [1] [2] Ion associates are classified, according to the number of ions that associate with each other, as ion pairs, ion triplets, etc. Ion pairs are also classified according to the nature of the interaction as contact, solvent-shared or ...