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Machines in motion Lab
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Transcript

  • 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.
      • - Restate your hypothesis
      • -State whether right or wrong
      • -Use data (#’s) to support why hypothesis is right or wrong
    • 2. Is your hypothesis for PART 2 right or wrong? Explain. (follow same steps as above)
    • 3. Identify Sources of Error AND how to improve them.