+A physics engine is software that mimics the laws of our physical world. It gives virtual objects [Force](/wiki/force) and momentum, calculating their movement and [Collision](/wiki/collision) with other elements. This creates believable interactions, from tumbling blocks to flowing water, vital for [Video Game](/wiki/video_game) and [Simulation](/wiki/simulation) fidelity.
+## See also
+- [Gravity](/wiki/gravity)
+- [Rigid Body](/wiki/rigid_body)
+- [Animation](/wiki/animation)
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