each in turn suggested in physics force is the perceptible cause of the acceleration of a mass change in the rate or direction of its motion and is experienced as a push or a pull instead of in physics force is what causes a mass to accelerate experienced as a push or a pull the addition of and is good however a force need not be perceived to exist the definition of acceleration is indeed confusing to the lay person but i think that the wikilink on acceleration covers it we need to be careful to not go overboard in description in the lead provide definition momentum quantity of motion hmm this isn't exactly an accurate definition of momentum since momentum is in fact both mass and motion again the wikilink i think should suffice but maybe we can reword things without providing definitions to make it clearer i want this to be intelligible but i'm afraid that including these points might be confusing for many and an annoyance to even more following the development of quantum mechanics it is now understood that momentum is a fundamental property of particles and that according to the standard model of particle physics changes in momentum are the consequence of the net emission or absorption by particles of momentum carrying gauge bosons effects which are at the macro level experienced as a force are the consequence of the aggregate effect of these boson mediated fundamental interactions in modern physics only four fundamental interactions are known in order of decreasing strength they are strong electromagnetic weak and gravitational high energy particle physics observations in s and s confirmed that the weak and electromagnetic forces are expressions of a unified electroweak interaction no gauge boson has yet been demonstrated for mediating the gravitational interaction and what is perceived as the force of gravity is more accurately attributable to the the effect of distortions by massive bodies of the curvature of spacetime as explicated in einstein's theory of general relativity there is a slight issue here with the sentence effects which are at the macro level experienced as a force are the consequence of the aggregate effect of these boson mediated fundamental interactions this sentence misses the fact that forces also exist on the micro level a single boson mediated fundamental interaction often has a force associated with it for example an electron accelerates because it emits a photon this is due to the electromagnetic force acting on the electron one micro interaction still a force since a mass accelerated i will implement the wording i think is good but let's keep discussing the problematic wording