II. Motion Diagrams - plots of motion data
- detailed, visual way of describing motion
A. Displacement vs. Time Plot
(d) Displacement
(distance from start) meters
To understand the motion that produced this plot we must look at the slope
= Velocity
2 types of motion
shown in this plot
1. Constant Positive Velocity
2. Constant Negative Velocity
Calculating Velocity
V = ∆d/∆t
= (10. m - 5.0 m)/(4.0 s - 2.0 s)
= +2.5 m/s
|
|
| Slope | Velocity |
| + 2.5 m/s | + 2.5 m/s |
| Constant | Constant |
| Positive | Positive |
A to B
Constant velocity
B to C
Increasing Velocity,
then Decreasing Velocity
D
Rest V = 0
D to E
Increasing Velocity
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