1. Chapter 4, Section 2
Graphs of Motion

2. Calculating Slope Slope = Rise (y values) Run (x values)
Slope = y2 – y1
x2 – x1
= 150 m – 0 m
30 s – 0 s
= 5 m/s

3. Position vs. Time Graph On a position vs. time graph: slope = speed
A steeper line = faster speed.

4. Speed vs. Time Graph
On a speed vs. time graph: slope = acceleration

5. Position vs. Time Graph
Which graph shows an object speeding up and which graph shows an object slowing down?

6. Speed vs. Time Graph Example

7. Which graph shows two runners moving at the same speed?B C D