Open Stax is a project by Rice University and many other collaborators. It is designed to provide college ready books for free. The books can be read, edited, and/or adopted by any person or course. http://www.openstaxcollege.org is a link to the program website. The above link will take you directly to the book. This will be an excellent source of information for the AP Physics class.

Interested in college? Ask me about any of these schools. I have had the opportunity to attend, teach, or both at these wonderful institutions. I am not suggesting that they are always a better fit for you spceifically. But I can talk to you about some of their unique characteristics.