This document provides an overview of fundamental concepts in physics. It discusses physics as the study of fundamental principles of the universe. The objectives of physics are to find fundamental laws that govern natural phenomena and use them to develop mathematical theories that can predict experimental results. Theories are developed based on experiments and make predictions that are tested. Fundamental quantities like length, mass and time form the basis for defining other physical quantities. Standard systems of measurement like the SI system are discussed. The document also covers dimensional analysis, scientific notation, and significant figures which are important concepts in physics measurements.