Mechanics is a branch of Physics that involves study of Kinematics, Dynamics (also known as Kinetics) and Acoustics of Physical Entities.
Kinematics is study of Position, Form, Orientation and Motion of Physical Entities Without taking into consideration associated Masses, Quantities, Forces Applied/Generated, Work Done/Required, Energy Produced/Used, Power Generated/Required, Temperature, Pressure etc.
Dynamics (or Kinetics) is study of Position, Form, Orientation and Motion of Physical Entities While taking into consideration associated Masses, Quantities, Forces Applied/Generated, Work Done/Required, Energy Produced/Used or Power Generated/Required, Temperature, Pressure etc.
Acoustics is study of Mechanical Disturbances caused by Flow of Energy in Physical Entities.