How is the branch of kinematics different from mechanics?

Mechanics is a branch of science which deals with the motion of an object and the forces acting on it. Mechanics is divided into two branches- Kinematics and Dynamics.  

Kinematics:  It is a branch of mechanics that deals with only the motion of objects but not the forces that cause the motion. For example, moving trains, and moving water in a river.

Dynamics:  It is a branch of mechanics that deals with the study of forces and their effect on motion. For example, forces acting on a 5 kg ball when it is thrown up vertically and reaches a height of 5m before returning to the ground.