The third edition of Physics is intended for a two-semester college course in introductory physics using algebra and trigonometry. This edition presents the basic concepts of physics that students need to know for later courses and future careers. This text helps students learn that physics is a tool for understanding the real world, and to teach transferable problem-solving skills that students can use throughout their entire lives. Although the fundamental philosophy of the book has not changed, detailed feedback from instructors and students using the previous editions has enabled us to continually fine-tune our approach. Some of the most important enhancements in the third edition include: new/updated MCAT Exam coverage added and moved online, review & synthesis problems added, new biomedical applications, lists of biomedical applications at the beginning of each chapter, new ranking tasks, checkpoints, and collaborative problems. Connections have also been enhanced to help students see the bigger picture. Also available with this edition: McGraw-Hill SmartBook, ALEKS Math Prep for Physics, McGraw-Hill Connect, Online Physics Education Research Workbook, Electronic Book Images and Assets for Instructors, Computerized Test Bank Online, Electronic Books, Personal Response Systems, Instructor’s Resource Guide, and a Student Solutions Manual.