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# Machines in motion Lab

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• 1.
• Machines in Motion
• What makes a machine move? A force does.
• Problem:
• Part 1) How does the amount of force affect the speed ?
• Part 2) How does the mass of the car affect the speed ?
• Variables:
• Part 1:
• Independent: __________
• Dependent: ___________
• Part 2:
• Independent: __________
• Dependent: ____________
• Materials:
• meter stick
• Newton scale
• Trolley and “launching ramp”
• Strong rubber band
2 N 2 N
• 2. HYPOTHESES
• PART 1 : How does the amount of force affect the speed ?
• If the ____(IV)_____ is increased,
• Then the __(DV)__ will _(choose one)_
• Because __(use sci knowledge to explain)__
• PART 2 : How does the mass of the car affect the speed ?
• Follow the same format as above
• 3.
• PROCEDURE:
• Pull back the rubber band to 2N and launch the car.
• Mark the distance with a piece of tape (this is your “finish line”).
• Measure and record this as your distance in your data table.
• Now pull the rubber band back to the 2N mark and launch the car again.
• Measure the time it takes the car to reach the finish line and record it in the table. Repeat this 2 more times for a total of 3 trials .
• Repeat steps #4 & #5 for 4N, 6N, and 8N .
• Repeat the whole lab again with a heavier car .
Finish line 2 N 2 N
• 4.
• 5.
• 6. Graphing Results
• 7. The Relationship Between _ both IV’s__ and the _ DV _ units units (Heavy) (Light)
• 8.
• Conclusion/Summary:
• Is your hypothesis for PART 1 right or wrong? Explain.