Investigating the contradiction between Descartes' principle of conservation of momentum and Leibniz's principle of conservation of energy based on Avicenna's physics

Physics and philosophy have not been separated since the beginning of physics. Therefore, it is not far from the expectation that we find indications of the laws of stability of physics in Western philosophy. The results derived from the two philosophical schools of Descartes and Leibniz, which do not even agree on the understanding and description of the substance, each of them is in charge of the design of one of the two important laws of conservation of energy and conservation of momentum (the amount of motion), which is a serious issue. This article will show with an analytical-inferential method that although the premises of the two laws of conservation of energy and conservation of momentum in the philosophy of Leibniz and Descartes are incompatible, but these premises form a single whole in the philosophy of Abu Ali Sina (Avicenna).