Mechanics is the science of describing the behavior of objects under the action of forces. By using mathematical operations scientists and engineers are able to predict the conditions of rest or motion of bodies.
Mechanics covers three main subjects:
1. Mechanics of rigid bodies
2. Mechanics of deformable bodies
3. Mechanics of fluids
The first topic - mechanics of rigid bodies - is subdivided into Statics and dynamics. Statics deals with bodies at rest and dynamics deals with bodies in motion.