the branch of physics concerned with the motion of bodies in a frame of reference
"The course focused on mechanics, which is the branch of physics concerned with the motion of bodies in a frame of reference."
The branch of physics that deals with the action of forces on material objects with mass
"The mechanics worked on the car engine all afternoon."
plural of mechanic
In plain English: Mechanics are the parts and systems that make machines work properly.
"The car needs new mechanics because the engine sounds strange."
Usage: Use this term to refer specifically to the scientific study of motion and force, not as a synonym for car repair technicians. It is often confused with "mechanisms," which describes physical devices rather than the underlying principles governing them.
The word mechanics comes from the Latin mēchanicus, which was borrowed from Ancient Greek. It originally meant "of or relating to a machine or tool."