Projectile
Motion
Page 2
Procedure
A. Set Up
1. Read through the procedure and device who will be responsible for each step. One person must operate the rocket, and one person must operate the CBL and calculator. Both partners must wear goggles during this experiment.
2. Set up your CBL™ system. Use the unit-to-unit link cable to connect the CBL™ unit to your calculator. Use the I/O ports located on the bottom edge of each unit.
3. Connect the motion detector to the SONIC port on the left side of the CBL, and place the motion detector on the ground in an open area, facing up.
4. Download or enter the HIKER.82 program listed in the appendix of the Texas Instruments CBL™ Experiment Workbook.
5. Fill the water rocket to the level shown on the rockets body. Make sure to fill the rocket to the same level during each flight in the experiment.
6. Attach the pump/launcher to the rocket as shown in the manufacturer's directions.
B. Rocket Launch
7. Pump the pump/launcher 10 times. Caution: do not exceed 20 pumps or the maximum number suggested by the manufacturer, which is lower. Be sure to hold the rocket and pump/launcher so that the rocket is not directed toward yourself or another person. While the rocket operators pumping, the CBL operator should turn on the CBL and start the program HIKER on the TI-82.
8. At the prompt, the CBL operator should press enter to start the graph. The motion detector, being careful to keep the rocket in the motion detector's beam.
9. Observe the flight of the rocket. If the falling rocket seems likely to hit the motion detector, move the motion detector out of the way - but don't move the motion detector until the rocket has clearly begun to fall. Retrieve the rocket and repeat steps 5-9 if necessary.
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