Part D
Describe in what way the position of the modeled point varies from the center of mass point. S
what direction does it lie from the center of mass point?
Assuming the variation is due to small inaccuracies in the initial velocity values in the table, how
the initial vx and vy values to get closer to the observed motion?
Now, refer to the Tracker Help to see how to define an analytic model in the Model Builder. The
• Create an Analytic Particle Model
• Select a color for this measurement different from the four other measures (like a bright
• Enter the mass of the snowboarder in kg. (See the first frame of the video for that inform
Enter the initial time. Since we're modeling the projectile motion part of the run, begin wit
Enter the expressions you developed in (c) above for the horizontal and vertical displacen
use symbols similar to those used in a spreadsheet for multiplication (*), division (/), and
•
After you create your analytic model, run the video. Due to the short time intervals in this video
difficulty of measuring closer than a couple of centimeters for any point on the snowboarder's
table fo
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