Does the Book Move? An Introductory Friction Problem

The video tutorial covers a physics problem involving a book on an incline with applied forces. It explains how to determine if the book moves and calculates its acceleration using free body diagrams and force analysis. The tutorial emphasizes the difference between static and kinetic friction and corrects an initial calculation error by applying the correct friction coefficient.

How do you determine if the book moves or not?

Why is the acceleration calculated using kinetic friction instead of static friction?

What is the acceleration of the book when it is moving?