Phy 121
Your 'ball down ramp' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Your general comment **
** Will a steeper ramp give greater or lesser time? **
The steepest ramp will require the least time.
** As slopes increases will time intervals increase, decrease or show no pattern? **
The time intervals should be decreasing.
** Your report of 5 trials each way for 1 domino **
2.047
1.992
2.008
1.938
2.016
1.797
1.789
1.766
1.805
1.695
The intervals listed above represent the time required, `dt, for the ball to travel down the ramp 26.9 cm, `ds with one domino creating the slope; the first five with the domino under the right end of the ramp and the second five with the domino under the left end of the ramp.
** Your report of 5 trials each way for 2 dominoes **
1.219
1.328
1.234
1.250
1.375
1.250
1.156
1.266
1.234
1.125
The above intervals are the time required, `dt, for the ball to travel the distance down the ramp 26.9 cm, `ds, with two dominoes creating the slope, the first five with dominoes under the right end of the ramp and the second five with dominoes under the left end of the ramp.
** Your report of 5 trials each way for 3 dominoes **
1.008
1.031
.953
.922
.953
1.125
1.016
1.016
.945
1.000
The above intervals are the time required, `dt, for the ball to travel the distance down the ramp 26.9 cm, `ds, with three dominoes creating the slope, the first five with dominoes under the right end of the ramp and the second five with dominoes under the left end of the ramp.
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
No, my results support my hypothesis that as the slope increases, the time will decrease.
I believe this was your hypothesis.
** How do you think ave velocity is related to slope? **
The average velocity increases as the slope increases.
** Speculate on why ave velocity changes with slope. **
Possibly, the effect of gravity pulls the ball down faster the greater the slope is.
** How could you test your speculations? **
We could find the average velocity and slope of the ramp and form a graph to determine exactly.
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1:15
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&#Your work looks good. See my notes. Let me know if you have any questions. &#