Answer
There are three forces acting on the book. The force of gravity points straight down. The normal force from the table points straight up. These two forces have the same magnitude. The force of kinetic friction points in the opposite direction from the book's motion.
Work Step by Step
There are three forces acting on the book. The force of gravity points straight down. The normal force from the table points straight up. These two forces have the same magnitude. The force of kinetic friction points in the opposite direction from the book's motion. Note that the blue box in the free body diagram represents the book.
