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Phy 202
Your 'collaborative labs' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Collaborative Labs_labelMessages.txt **
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Collaborative Lab
You have completed the first series of collaborative labs.
In that series you developed some important skills with teamwork, collaboration and communication. By now you have also developed additional lab techniques and insights, as well as an expanded understanding of physics and the standard formulations of motion, energy, momentum, forces and other topics.
You now have a good idea of the function of each member of the team, the designer, the experimenter, the analyzer and the interpreter.
You are also familiar with the items in your lab materials package.
The second series of activities will be spread out over the remainder of the semester. The investigations in this series will be more substantial and extensive than those of the first series, though we will limit the scope to keep the workload reasonable.
Please give a brief statement of three proposals for the second series of investigations, relevant to the topics of the labs you have performed and/or the material covered so far in the course. It should be possible to conduct your proposed investigations using the materials in the lab package, and/or common items you can expect your team members to have.
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Discuss your first idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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We would be testing the factors and forces that affect acceleration.
Hypothesis (2):
What will be the average speed of a tennis ball rolling down 20cm tall ramp and traveling 5m?
Will the ball continually accelerate as it travels the 5m? Or will it decelerate?
Materials- stack of books, wood ramp (from lab kit), masking tape, stopwatch or watch with second hand, meter stick, pen or pencil, and Matchbox car (from lab kit).
1Set up a 5m runway with a ramp at one end that raises 20cm. Be sure to smooth the ramp transition with the runway with a taped firm piece of paper.
2.Place a masking taper marker where the ramp touches the floor and label 0m. Label also 1m, 2m, 3m, 4m, and 5m markers from the start of the ramp.
3.Take car and launch it from the top of the ramp and begin timing it at the 0m mark.
Use Distances: 0m to 1m, 0m to 2m, 0m to 3m, 0m to 4m, and 0m to 5m. And Record data for each interval.
***Calculate the instantaneous speed at the following distances, the time between each of the distances, the acceleration for the distances, and create a line graph for the instantaneous speed (f through j) and the average speed 0 - 5m.
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Discuss your second idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
*****What effect does varying force and varying mass have upon the acceleration?Purpose: To use experimental data to determine the mathematical equation which relates force, mass and acceleration.
Materials: ramp, different ball size/weights, table, books for ramp to lay upon.
You can use a ramp and use different sizes/weights of the balls in the lab kit and see whether acceleration varies when varying the mass and force
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Discuss your third idea. How do you think it might be tested? What sort of items do you think might be required? How do you think your idea might be tested?
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Using the metal strip in the lab kit, rubber band different numbers of dominoes on the ends. Then push a force upon the strip and measure the angles and distance traveled. Compare the different numbers of dominoes on the effect of the angle of the metal strip.
Materials: metal strip, dominoes, rubber bands, paper, stabilizing square to put the metal strip on to spin it, and a ruler.
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Your instructor is trying to gauge the typical time spent by students on these activities. Please answer the following question as accurately as you can, understanding that your answer will be used only for the stated purpose and has no bearing on your grades:
• Approximately how long did it take you to complete this activity?
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`` Thanks. Your ideas look good. I'll get back to you soon on the collaborative labs, after receiving a responses from a few more students.
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