Wednesday, October 3, 2012

Tumble Buggy Lab (Data & Graph)

Text Box: Displacement: cm (+/- 3cm)
Time (seconds)
Trial #1
Trail #2
Trail #3
Trail #4
Trail#5
Average
Uncertainty
2
59
59
60
60
61
60
+/- 0.95
4
123
117
116
119
120
119
+/- 3
6
184
179
180
178
180
180
+/- 1.5
8
284
281
280
281
283
281
+/- 1.5
10
393
390
392
390
391
391
+/- 1.5

















Graph: 








Mathematical Relationship: 


                            Time= 41.3 (cm/second) * Distance -41.2 

                                                                                              ^ In theory, this number should be zero

Explanation of uncertainty: 

                          Due to human error, the uncertainty in the X- axis was 0.2 seconds.

                          The uncertainty in the Y-axis was originally 3 cm because the largest range of measurements was 6 cm (divided by 2= three centimeters.) However, due to the nature of the car, in that it did not drive in a strait line, i had to add a large uncertainty (25cm) to account for the curved path of the tumble buggy. This is also the reason for the presence of a y-intercept (when theoretically there should not be one.) 


1 comment:

  1. Sonia, good justification for your uncertainty and nice graph.

    Doublecheck your mathematical relationship - it looks like you switched the IV and DV.

    In your data tables, you're missing your measurement uncertainty. Also, your statistical uncertainty should be reported to just 1 sig fig.

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