According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In this case, the hand exerts an upward force of 12 N on the book, and the book exerts a downward force of 12 N on the hand. The reaction force is equal in magnitude but opposite in direction to the action force.

Additionally, the book exerts a downward force of 10 N due to its weight. The net force acting on the book is therefore 2 N upward (12 N - 10 N). This net force causes the book to accelerate upward at a rate of 0.2 m/s^2 (2 N / 10 kg).