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In [[physics]], '''force''' is anything that can cause a [[mass|massive body]] to [[acceleration|accelerate]]. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the [[vector sum]] of all forces acting on it (known as [[net force]] or resultant force). In an extended body, force may also cause [[rotate|rotation]], [[deformation]], or an increase in [[pressure]] for the body. Rotational effects are determined by the [[torque]]s, while deformation and pressure are determined by the [[Stress (physics)|stress]]es that the forces create.  

In [[physics]], '''force''' is anything that can cause a [[mass|massive body]] to [[acceleration|accelerate]]. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the [[vector sum]] of all forces acting on it (known as [[net force]] or resultant force). In an extended body, force may also cause [[rotate|rotation]], [[deformation]], or an increase in [[pressure]] for the body. Rotational effects are determined by the [[torque]]s, while deformation and pressure are determined by the [[Stress (physics)|stress]]es that the forces create.