|| home ||| units ||||| help

Trial 3 - Changing Direction?

1. Observe the Graph 1 below.

   

   Write a short description for the graph that tells the story of the movement. Be sure to include numerical 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.
   
   
2. 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 graphs.
   
   
3. Label your graph to show forward (f) motion and backward (b) motion. How did the actual motions compare to your predictions? Explain any differences.
   
   

4. Now that you have experienced the needed changes in velocity to reproduce the graph, select the letters from the graph shown below to identify the following motions. Write a short justification for each selection.

   

   I. no movement

   

   II. forward motion

   

   III. backward motion

   

   IV. same or constant velocity

   

   V. changing velocity

   

   VI. increasing velocity

   

   VII. decreasing velocity