In physics, force is a physical quantity that measures the intensity of the exchange of momentum between two particles or particle systems (in physics language spoken interaction particles). According to a classical definition, force is any agent capable of modifying the amount of movement or shape of the materials. Not to be confused with the concepts of effort or energy.
In the International System of Units, the unit of measurement of force is the newton or Neuton (symbol: N), named after Isaac Newton in recognition for his contribution to physics, especially classical mechanics. Newton is a derived unit is defined as the force necessary to provide an acceleration of 1 m/s2 an object of 1 kg of mass.