Definition
Kinematics is the study of the motion of an object with a constant or a zero acceleration. For example, projecting a path of an object in free fall deals with kinematics because there is a constant acceleration (due to gravity).
Throwback to One Dimension
I know we already did motion in one dimension, but this is important. What you will need to know are things called kinematic equations. These are equations that describe motion in one direction under a constant acceleration. These equations deal with five variables: x (displacement), Vo (initial velocity - pronounced "vee-not"), v (final velocity), and a (acceleration).
Notice, all of the equations below have initial velocity. If you encounter a problem that does not give initial velocity, you have to find it using other methods.
Notice, all of the equations below have initial velocity. If you encounter a problem that does not give initial velocity, you have to find it using other methods.