Lab On Constant Speed Graphical Analysis --- Name
Constant Speed Graphical Analysis Lab Name___________________________
8th Grade PSI Score _________/ 34 points
Purpose- To graphically study the motion of a constant velocity vehicle.
Materials- Stopwatches, Constant Velocity Vehicle, Lab Sheet
Procedure-
1. Obtain materials.
2. Choose a starting point for the constant velocity vehicle. This should be at the start of a floor tile.
3. Measure the time it takes the constant velocity vehicle to cover 1 floor tile from the starting point.
4. Repeat step 3 two more times so you have a total of three trials for this particular distance.
5. Repeat steps 3 and 4 for 2 floor tiles, 3 floor tiles, 4 floor tiles, etc.
6. Compute an average time using the 3 time trials for each distance.
7. Use your data to produce a graph of distance (floor tiles) vs. Average Time (secs)
8. Answer the analysis questions.
Data Set
|Distance (floor tiles) |Time 1 (sec) |Time 2 (sec) |Time 3 (sec) |Average Time (sec) |
|1 | | | | |
|2 | | | | |
|3 | | | | |
|4 | | | | |
|5 | | | | |
|6 | | | | |
|7 | | | | |
|8 | | | | |
|9 | | | | |
Graph
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Analysis Questions
1. Explain the term “constant velocity”.
2. Use your graph to determine the average speed at: (USE v = d/t and show your work!)
a. Floor tile 3
b. Floor tile 5
c. Floor tile 8
3. Sketch what the graph would look like if the cart had the following. Justify the shape of the graphs you draw.
a. a positive acceleration
b. a negative acceleration
4. What is the value of the acceleration of the cart for this lab? Justify your answer.
5. List 3 examples of objects traveling at a constant speed.
6. What is the difference between speed and velocity?
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