UNIVERSITY PHYSICS I CHAPTER 3 Kinematics i Rectilinear motion Chapter 3 Kinematics i: rectilinear motion Motion implies change, and it is change make life-and physics-visible and interesting. Kinematics is the theory about the description of motion Physical theories are creations of the human intellect; they must be invented rather than discovered1 Chapter 3 Kinematics I: rectilinear motion Kinematics is the theory about the description of motion. Physical theories are creations of the human intellect; they must be invented rather than discovered. Motion implies change, and it is change make life-and physics-visible and interesting