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This text is meant to accompany class discussions. It is not everything there is to know about dimensional analysis. It is meant as a  prep for class.

Click for the questions that go with this reading
Position vs Time

A car is parked 1 m from the house. A graph of this car's motion is boring. After 1 second the car's position would not change. After 2 seconds the car's position is still the same. Each second the car's parked, it's position would not change. A graph of 5 seconds of its motion would look like the one below.

Suppose the car moved with a constant velocity of 1 m/s. Every second the car will be 1 m farther away. After 1 second the car will be at 2 m; after 2 seconds the car will be 3 m away; after 3 seconds, 4 m away; after 4 seconds, 5 m away, and after 5 seconds the car will be 6 m away. The graph would look like the one below.

Using the skills from the previous sections, what can be calculated from a position vs time graph? The following examples will show you what can be calculated from a position vs time graph and how they can be calculated.

Finding position on an position vs time graph

This video can be found on YouTube at https://youtu.be/NouXvA1zBHE

 Example 1 This video can be found on YouTube at https://youtu.be/quMXTNuoYVE

by Tony Wayne ...(If you are a teacher, please feel free to use these resources in your teaching.)

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