Forces represent a measure of mechanical interaction of bodies. The change in motion of bodies is the result of the action of forces. Forces are the result of the action of physical bodies. Physical bodies interact as a result of the action of forces. A force is the vector quantitative measure of the intensity of interaction.
Every force is trasferred by the interchange of quantums.
Force of interaction is trasferred by means of a certain mediator is called a field. There is only one force causing weak electromagnetic and strong interactions. Even the outline of the abovementioned definitions show that many of them are incompatible. But as a rule the authors contradict each other or even themselves. The main difference between his investigation and the ideas offered in this paper is that P.V.Harlamov considers the problem mainly on the basis of theoretical mechanics and this paper deals with logical and methodological aspects of the problem.