#$&*
course Phy 201
7/4 2pm
Bethanie SchmiederExperiment 4
Distance Time
20cm 00:01:58
20cm 00:01:58
20cm 00:02:01
10cm 00:00:59
15cm 00:01:26
25cm 00:02:03
30cm 00:02:10
35cm 00:02:21
40cm 00:02:29
45cm 00:02:35
50cm 00:02:48
Distance Average Velocity Average Acceleration Final Velocity
10cm 16.9cm/s 28.6 cm/s2 33.8 cm/s
15cm 11.9cm/s 9.4 cm/s2 23.7 cm/s
20cm 12.7cm/s 8.1 cm/s2 25.4 cm/s
25cm 12.3cm/s 6.1 cm/s2 24.7 cm/s
30cm 14.3cm/s 6.8 cm/s2 28.6 cm/s
35cm 15.8cm/s 7.1 cm/s2 31.5 cm/s
40cm 17.5cm/s 7.6 cm/s2 34.9 cm/s
45cm 19.1cm/s 8.12 cm/s2 38.2 cm/s
50cm 20.2cm/s 8.14 cm/s2 40.4 cm/s
The graph I sketched for the average acceleration vs. distance showed an overall positive trend, but there is a point that is an outlier that was a result of experimental uncertainty. The results show that usually as the distance increases, the average acceleration with the exception of the outlying point for the 10cm distance. The variations in acceleration are to be expected with the equipment being used because it would make sense that if the ball begins at a farther distance, which means the ball is at a higher incline when it starts, and the ball will accelerate faster. My experiment does not support the hypothesis that acceleration is independent of the velocity of the ball and distance on the ramp. In most circumstances, as the distance increased, acceleration increased, as well as velocity. A straight horizontal line can be drawn in the graph because when the error points are plotted a line of best fit can be drawn between them.
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@& A displacement of 10 cm from rest in about 1 second implies ave velocity 10 cm/s, final velocity 20 cm/s and average acceleration 20 cm/s^2.
Your result doesn't seem consistent with this analysis.
You do need to include a sample calculation to demonstrate how you obtain average acceleration. I can't reverse-engineer your results for the 10 cm trial to figure out how you got the result you did.
Note also that your results should be inserted into a copy of the experiment document.*@
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&#Please see my notes and, unless my notes indicate that revision is optional, submit a copy of this document with revisions and/or questions, and mark your insertions with &&&& (please mark each insertion at the beginning and at the end).
Be sure to include the entire document, including my notes.
If my notes indicate that revision is optional, use your own judgement as to whether a revision will benefit you. &#
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