INVERSION OF TIME IN THE CLASSICAL KINEMATICS OF MATERIAL POINT

Abstract

As a result of the fact that the time in classical physics manifests itself only through the movement of the bodies, in the kinematics of material point the question of reversing the course of time (from the future to the past) is examined theoretically. The method is defined for inversion of time and its impact on the kinematic quantities and principles describing the motion. Three main types of motion in the kinematics have been discussed compared to reversal the course of time. a) Fully reversible motions - these are all constant motions. They can occur in the same way both in right and reverse direction of passage of time but they only indicate that the time is running not determining its direction; b) Semi reversible movements - these are all movements, in which the acceleration is an even function in case of inversion of time. They amend their nature temporary only in right and reverse direction of passage of time for a certain period. After that the semi-reversible movements run identically. They also show that the time is running but not determining its direction; c) Completely irreversible movements - these are movements in which the tangential acceleration is odd function compared to the inversion of time. These can occur only in one direction of the time course; in the opposite direction they are impossible. The irreversible movements can be used to determine the direction of time. The reasons for these three types of movements have been examined and the relevant laws have been received: of motion, velocity and acceleration in right and reverse direction of passage of time. Their relationship with some basic quantities and laws of classical physics has been shown as well.