Position-Time Graphs Position can be represented on a POSITION-TIME GRAPH, which looks similar to a distance-time graph. However, there are two main differences between the two graphs: A position-time graph has position as the y-variable, which includes a direction. A positive slope means that you are moving in the direction of the axis. A negative slope means that you are moving in the opposite direction. The slope on a position-time graph can have a negative slope, indicating that the object is moving in the opposite direction that is mentioned on the y-axis. Consider the position-time graph below. Look at each different section and describe what is happening. You will later use this information to plot a velocity-time graph for the object.

Since we have distinct sections with different velocities, we can plot these sections onto a velocity-time graph. The sections can then be connected using vertical lines (although this is not realistic).

PRACTICE: Describe the motion during each segment.

PRACTICE: Using the descriptions from the previous position-time graph, plot a velocity-time graph for the object.

PRACTICE: Describe the motion during each segment.

PRACTICE: Using the descriptions from the previous position-time graph, plot a velocity-time graph for the object. H.W. Worksheet 13