Hadjou Belaid, Zakia2024-07-112024-07-112024-06-01CDhttps://dspace.univ-tlemcen.dz/handle/112/22885The observation of physical phenomena is incomplete if it does not lead to quantitative information, which is the measurement of physical quantities. To study a physical phenomenon, one must examine the important variables; the mathematical relationship between these variables constitutes a physical law.enMECHANICS;THE MATERIAL;POINTArticle