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 have the shortest interval, because it will cause the ball to accelerate faster.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I think there would be a clear pattern of time interval decreasing as slope increased.
** Your report of 5 trials each way for 1 domino **
2.656
2.535
2.718
2.593
2.551
1.977
1.977
2.055
2.023
1.949
All of the numbers above are the measurements of the time it takes a ball to roll down a ramp. The first five are rolling from right to left, and the second five are from left to right. I arranged the ramp according to the guidelines above, and conducted the experiment by releasing the ball and using the TIMER program to measure the interval between the release and when the ball struck the bracket. The distance from the top release point to the bottom was 27 cm. Apparently my table is sloped and leans from left to right.
** Your report of 5 trials each way for 2 dominoes **
1.492
1.461
1.480
1.496
1.355
1.352
1.305
1.352
1.289
1.352
The data was collected using the timer program and again it was divided into two sets (right to left and left to right). This data demonstrates that the ball is indeed accelerating faster on the steeper slope. The error from the table slant was slightly less pronounced.
** Your report of 5 trials each way for 3 dominoes **
1.164
1.086
1.164
1.117
1.164
1.086
1.086
1.055
1.039
1.117
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
The results do support my hypothesis that increased slope will cause a shorter `dt and greater vAve for the given `ds of 27 cm.
** How do you think ave velocity is related to slope? **
I think that the average velocity increases as the slope increases. Given the results it would seem that the increase is somewhat diminished by each marble. If the relationship of vAve vs. slope were graphed it would result in an increasing graph, but one that increased at a decreasing rate.
** Speculate on why ave velocity changes with slope. **
I think that the extra height of the ramp allows gravity to act on ball more over the length of the ramp.
** How could you test your speculations? **
By running further experiments, and seeing if the relationships continue to behave according to the hypothesis.
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1.5 hrs
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&#Very good work. Let me know if you have questions. &#