This document discusses describing and representing motion. It explains that an object is in motion when its position changes over time. Motion can be described using diagrams with coordinates or graphs by plotting an object's position over time. The document provides an example of converting a diagram showing an object's changing position into a position-time graph through a data table and connecting the points with a straight line.

1. FORCE, MOTION,
AND ENERGY
THIRD QUARTER

3. DESCRIBING MOTION
When can we say that
an object is in motion?
How do we describe
the motion of an
object?

4. USING DIAGRAMS
• Consider the diagram in Figure 1. The positions of the
objects are described in the diagram by their
coordinates along the number line.

6. USING GRAPHS
• Another way to describe the motion of the ball is by
the use of motion graphs. Convert the diagram in
Figure 2 to graph by following the guide below.
Table 1: Position of the ball vs time
Time (s) Position of the ball (m)
5 5
10 10
15 15
20 20

7. PLOTTED FROM DATA TABLE

8. LASTLY, DRAW A STRAIGHT DIAGONAL
LINE THROUGH THE POINTS IN THE
GRAPH.