This book has been written according to the new NCERT syllabus prescribed by the Central Board of Secondary Education (CBSE) for 9.This book covers a broad spectrum of scientific concepts. Text deigned to buid a solid foundation for students. In this textbook, boxes have been profusely used which contain detailed explanations of intricate topics. These are meant, for those students and teachers who always strive to keep an edge over others. A wide range of questions covering each topic.Experiments and practicals are included in Activities. Solved NCERT questions and exercises are new features of this book. Table Of Contents: Chapters:1. Motion2. Force and Laws of Motion3. Gravitation4. Work and Energy5. Sound