vaverage = dtotal/ttotal

meter stick

stopwatch

calculator

John Dewey HS physics students

vaverage/group = ( vaverage member sum)/(number of members)

Groups will then post their group average speeds on the front board so that each student will then be able to calculate a class average speed (vaverage/class)

vaverage/class = (vaverage/group)/(number of groups)

Once your group average speeds have been calculated, group coordinators are to display their group's average speed data. All work (including variables, equations, substitutions and units) must be shown in your final lab report. Similarly, all data must be displayed in tabular form in your final lab report. Answers to all questions listed below must be included in your final lab report

1. State your personal average speed. State your group's average speed. State the class average speed. How does your personal average speed compare to the class average speed?

2. List the assumptions you and your group made in determining the distance around the third floor. List any potential sources of error that might have occurred as a result of the distance-measuring strategy you employed.

3. Convert your average speed into kilometers per hour using dimensional analysis as well as your conversions/equivalences sheet. At your personal average speed, calculate the time it would take you to walk 1 kilometer. Show all work.

4. Convert your average speed into miles per hour using dimensional analysis as well as your conversions/equivalences sheet. At your personal average speed, calculate the time it would take you to walk 1 mile.

5. Calculate how far you can walk in (A)1 hour and (B) 5 minutes. Calculate your average speed in feet per second.

6. Briefly summarize your group's distance-measuring strategy. Relate the mechanics of how the distances were physically measured. Explain how your group's average speed was derived.

7. Explain why different people walk at different rates and how these differences affected the class average speed.