This book presents in detail the entire curriculum of the chapter on collisions and the chapter on oscillations in Physics for the third year of high school.

It contains detailed theory, closed and open type questions, solved exercises - problems, as well as exercises and problems to be solved. 

• The theory is presented using the question-answer method. At the end of the theory of each chapter, there are questions for review. 

• The questions are structured by type (closed type – topic 1 of the National Exams and open type – topic 2 of the National Exams). 

• In the solved exercises-problems of each chapter, the methodology is integrated into key points. It also includes detailed guidance on what the student should not forget after studying the solved example, as well as a note on which exercises to solve are similar for practice. 

• The exercises to be solved contain basic concepts that the student must understand before moving on to the problems to be solved, which require more complex thinking. 

• In each section (before the closed type questions) there is a detailed study proposal at two levels. The 1st level refers to basic study, while the 2nd level refers to in-depth study.

For all questions, exercises, and problems to be solved, there are detailed solutions at the end of the book.