Collection of works of academician A . N. Krylova . T. 4. Ballistics is an outstanding work, which is not only a scientific work, but also an important contribution to the development of physics and mechanics. Author, Academician A. N. Krylov is known for his in-depth research in mechanics, and in this volume he continues to uncover the complex aspects of ballistics, a science that studies the motion of bodies under the influence of various forces. In the fourth volume of the collection of works Krylov focuses on the theoretical and practical aspects of ballistics, offering readers a unique look at the dynamics of moving objects. It explores the laws of movement of projectiles, their interaction with the atmosphere, as well as the influence of various factors on the flight path. The reader will be able to immerse himself in the world of accurate calculations and scientific experiments, which have become the basis for many modern technologies related to aerodynamics and rocketry. This book will be of interest not only to specialists in the field of physics and engineering, but also to everyone who is fond of science and wants to understand how the laws of nature work in the real world. Students and graduate students of technical universities will find useful materials for their research in it, and teachers will be able to use it as a source of inspiration for their lectures. The book will also attract the attention of lovers of the history of science who want to learn more about the development of ballistics and Krylov’s contribution to this area. The topics raised in the book range from the basics of ballistics to complex calculations, making it a universal study aid. Krylov not only shares his knowledge, but also invites readers to think about important issues related to the accuracy of measurements and the significance of scientific discoveries. His style of presentation is clear and logical, which allows even complex concepts to be perceived easily and with interest. A. N. Krylov is not only an outstanding scientist, but also the author of many other significant works, among which one can distinguish "Mechanics" and "The Theory of Elasticity". His research has become the basis for many modern trends in science and technology. Reading "Collection of works of academician A. N. Krylova . T. 4. Ballistics, you will be able to better understand how his ideas and discoveries continue to influence modern technology and scientific research. This book will also be a valuable resource for those interested in military technology and the history of armaments. Understanding the principles of ballistics is of great importance for the development of new weapons systems and improving their effectiveness. Krylov, as one of the pioneers in this field, offers the reader a unique opportunity to look into the depth of scientific research that preceded modern advances. Thus, "Collection of works of academician A. N. Krylova . T. 4. Ballistics is not just a book, but a real encyclopedia of knowledge that will open up the world of science and technology before you. It will be of interest to both professionals and amateurs, and will be an important addition to the library of everyone who seeks to expand their horizons in the field of physics and mechanics. Do not miss the chance to touch the legacy of the great scientist and learn more about the laws governing movement that shape our world.