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Trial 3 - Testing your Predictions

1. With your back to the motion sensor, reproduce your Prediction I drawing of a distance-time graph from Trial 2 by walking forward and backwards over a 4 meter track in a 60 second period of time. 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.
   
   
2. How did the actual motions compare to your predictions? Explain any differences.
   
   
3. With your back to the motion sensor, reproduce your Prediction II drawing of a distance-time graph from Trial 2 by walking quickly forward for the first half of the track and then slowly for the second half. 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.
   
   
4. How did the actual motions compare to your predictions? Explain any differences.
   
   

5. With your back to the motion sensor, reproduce your Prediction III drawing of a distance-time graph from Trial 2 by walking forwards for 20 seconds, stopping for 20 seconds, and continuing forwards for another 20 seconds on a 4 meter track. 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. How did the actual motions compare to your predictions? Explain any differences.
   
   

7. With your back to the motion sensor, reproduce your Prediction IV drawing of a distance-time graph from Trial 2 by walking backwards 2 meters down the 4 meter track instead of at the beginning of the track. After 10 seconds they stop 1 meter from the start of the track for 40 seconds, then walk back to the 2 meter mark in the last ten seconds. The elapsed time of the total motion should be 60 seconds. 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. How did the actual motions of the graphs you created with the motion sensor compare to your predictions? Explain any differences.