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Trial 1 - Matching Motion

1. Before beginning Trial 1, set up the walking track. Refer to Technical Hints to set up the walking track.

2. Look and compare the two motion graphs. What similarities and differences do you notice about the shape of the lines in the two graphs?

   

   

   
   
3. Up to now we have been using speed to describe motion. When we add the direction of the movement to a numeric description of speed, we are really describing velocity. Write a short description for Graph 1 that tells the story of the needed movement. Be sure to include information about the direction of your motion, the speed of your motion, and your distance from the starting point when changes in direction and speed occurred.

   

   
   
4. Write a short description for Graph 2 that tells the story of the needed movement. Be sure to include information about the direction of your motion, the speed of your motion, and your distance from the starting point when changes in direction and speed occurred.

   

   
   
5. With your back to the motion sensor, try to reproduce Graph I from your description. Refer to Technical Hints to connect the motion sensor. Refer to Technical Hints to record a series of measurements. Repeat until you capture the desired graph. Save the graph. Refer to Technical Hints to save data.
   
   
6. Compare the graph that you created with original Graph 1. List any changes needed in your description to better reproduce the original graph. Be prepared to share your strategies with the class.
   
   
7. With your back to the motion sensor, try to reproduce Graph 2 from your description. Refer to Technical Hints to record a series of measurements. Repeat until you capture the desired graph. Save the graph. Refer to Technical Hints to save data.
   
   
8. Compare the graph that you created with original Graph 2. List any changes needed in your description to better reproduce the original graph.
   
   
9. Describe the relationship between the change in velocity needed and the lean of the lines found in the "cat's ears" in Graph 2.