The emphasis in this unit is the study of motion. The first step in the study of motion is to Observe. In observing, such things as measurement and units will need to be considered. Once the motion has been observed, you will need to be able to Describe the motion. Description can be described in terms of Diagrams, Text, Graphs, Tables, and Equations.

As an example, consider the situation shown in the graph below. It describes the motion of Car A and Car B with a graph. After completing this unit, you should be able to:

• Write a short paragraph describing the motion of Car A and Car B. You should be able to write about where the car is at certain times, its velocity and how its velocity is changing.
• Draw a diagram (picture) to show Car A's and Car B's motion. The diagram is called a motion diagram and includes stobe photos, motion vectors, and values for position, time, velocity, and acceleration.
• Make a table of values describing each car's position, time, velocity, and acceleration. You should be able to read the cars position and time directly from this graph. By finding the slope of the line and the area under the line other types of information may be gathered from graphs.
• Draw a graph of velocity vs. time or acceleration vs time to describe each car's motion.
• Use the kinematic (motion) equations to solve for information that you can't read directly from the graph.