Procedures for running model
Step 1. Now you should run your experiment with your model. Set
up the model with the parameters you used in the experiment. Record those
parameters below.
|
Gravity rate
|
Plane height
|
Plane Length
|
Distance to ground
|
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Step 2. Start STELLA and open Projectile Motion. Transfer
to the STELLA RUN mode. Use the SLIDERS to enter the appropriate values
of the parameters. Set the ranges for the chart coordinates and run times
that are appropriate for your problem and run the simulation.
Step 3. Record the results from your STELLA experiment in the
following chart.
| a. Velocity at end of inclined plane |
a. |
| b. x-coordinate at final impact point |
b. |
| c. y-coordinate at final impact point |
c. |
| d. time to reach bottom of inclined plane |
d. |
| e. Time to land on ground |
e. |
Analysis
1. Compare these results with those of your experiment.
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2. Name more than one factor that might explain any difference
between the actual results and the STELLA model and explain how that factor
might affect the results.
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3. Is the time it takes for the projectile to reach the ground from
the bottom of the inclined plane affected by the speed at which the projectile
leaves the incline? How do you know that your answer is correct? (You might
want to use data provided by your STELLA model.)
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4. How would the use of a much more massive projectile affect your results?
How do you know that your answer is correct?
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