4 place a motion detector at each end of the track

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carts should smoothly repel one another without physically touching. 4. Place a Motion Detector at each end of the track, allowing for the 0.4 m minimum distance between detector and cart. Connect the Motion Detectors to the DIG/SONIC 1 and DIG/SONIC 2 channels of the interface. 5. Open the file “19 Momentum Energy Coll” from the Physics with Computers folder. 6. Click to begin taking data. Repeat the collision you practiced above and use the position graphs to verify that the Motion Detectors can track each cart properly throughout the entire range of motion. You may need to adjust the position of one or both of the Motion Detectors. 7. Place the two carts at rest in the middle of the track, with their Velcro bumpers toward one another and in contact. Keep your hands clear of the carts and click . Select both sensors and click . This procedure will establish the same coordinate system for both Motion Detectors. Verify that the zeroing was successful by clicking and allowing the still-linked carts to roll slowly across the track. The graphs for each Motion Detector should be nearly the same. If not, repeat the zeroing process.
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