"Mechanics is the branch of physics that deals with forces and movement. Aligned to the science curriculum, this stimulating volume explores topics such as measurement, mass and weight, falling objects, force and acceleration, stability and equilibrium, energy, vectors and scalars, work and power, loads and levers, inclines and friction, and pulleys and gears. Nine projects help readers grasp a key scientific principle, such as cheating the force of gravity, inertia, and centripetal force. The text includes a chapter on Nicolas Copernicus, who developed the heliocentric model of the universe. Colorful diagrams explain certain concepts and the workings of machines."