reaction force

Newton's third law

In physics, a reaction force is the force that arises in response to an action force—Newton's third law states that every action has an equal and opposite reaction.

When you push against a wall, the wall pushes back with equal force.

Reaction forces explain why rockets propel forward (exhaust gases push backward) and why you feel the ground pushing up when you stand.

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opposite · equal · propulsion · resistance · counterforce · momentum · physics · rocket · rocket launch · launch · bounce · spring · tension · pressure · impact · collision · ground · normal

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Opposites
newtonian mechanics: action-reaction pairs

reaction forcedriving force

Power behind movement

thrust · push · impetus

active vs passive force application

reaction forcethrust

Forceful forward motion

impulse · stimulus

Family

reaction, force, react, reacting, reacted, reactive, reactivity, reactor, reactions

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