Mechanics is an important topic in the study of Physics, and is being taught in most of the universities in India as well as abroad to B.Sc., B.Tech and B.Sc. Hons students. This area of science deals with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. Mechanics has origin in the ancient period. Scientists such as Galileo, Kepler and Newton laid the foundation of classical mechanics, which deals with the particles that are either at rest or are moving with velocities significantly less than the speed of light. Fundamentals of Mechanics discusses the Vectors, Laws of Motion, Conservation Laws, Inverse-Square-Law Forces, Harmonic Oscillator, Theory of Relativity, Non-inertial Reference Frames. Each topic is explained in a simple language and with the help of line drawings and exercises. Mathematical expressions are given as per need and are derived in a systematic and simple manner.