Question

What are the differences between ``kinematics`` and ``kinetics``?

Answer 1

Kinematics is the branch of classical mechanics which describes the motion of points, bodies (objects) and systems of bodies (groups of objects) without consideration of the causes of motion. So you only have velocities and accelerations without the forces/torques which creates the motion. 

Kinetics is a term for the branch of classical mechanics that is concerned with the relationship between the motion of bodies and its causes, namely forces and torques. So here you have both velocities, accelerations and the forces which creates the motion.