In writing a college textbook in Engineering Mechanics Dynamics intended for both Engineering and Engineering Technology programs, the primary motivation is that the discipline requires a new approach. Since the topic itself is fundamental, it is possible to treat it rigorously and forget the audience. It requires a careful choice of topics and a balance in the depth of coverage. In many countries, aspiring engineering students study Calculus, Applied Mathematics, and Physics at High School. This is not universal. This book introduces these topics at the beginning for a review.This text is written for a first course in Dynamics. The text attempts to present the essential topics in a most practical manner. Emphasis is put on understanding the physical problem. Appropriate kinematic or kinetic equations of motion are used to obtain the required solutions. This book draws on my many years of teaching core engineering courses as well as specializations in the thermal sciences at Makerere Univ., Arizona State Univ., and the University of Toledo. Author is deeply indebted to his students and to his colleagues for their collaboration in developing curricula for engineering core courses.