James is absolutely correct. Kinematics is simply a mathematical description of motion in terms of velocity and acceleration. What causes the acceleration is not a concern in kinematics. Dynamics studies what causes those accelerations to happen -- i.e., forces.
Don't believe me? Use google to find the answer. Here, for example:
http://id.mind.net/~zona/mstm/physics/mechanics/mechanics.html.
I'll describe the difference in terms of uniform circular motion. Kinematically, circular motion (about the origin for simplicity) results when an object undergoes a constant radial acceleration of the form
$${\mathbf a} = - {\mathbf r} \omega^2$$
and the object has a velocity normal to the radial vector and equal in magnitude to
$$v = r\omega$$
Dynamically, circular motion (about the origin for simplicity) results when an object undergoes a constant radial force of the form
$${\mathbf F} = - F \hat{\mathbf r}$$
and the object has a velocity normal to the radial vector and equal in magnitude to
$$v = \sqrt{\frac{Fr}{m}}$$
Superficially, there's not much difference. However, the kinematic description doesn't care what causes the acceleration to occur. A ball tied to a string, a car driving around a circular track, or a planet in a circular orbit all obey the same kinematic relationship. The dynamic description does care.