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 time should be least for the steepest ramp and the interval should be the least. Maybe in our experiment if the ramps were much longer and you have 3 ramps set up like a race the visual perspective would be better.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I would expect the time intervals to be decreasing
** Your report of 5 trials each way for 1 domino **
right to left
1.355
1.297
1.441
1.297
1.281
left to right
1.715
1.828
1.797
1.816
1.875
My trials was using a steel ball traveling down a ramp while timing from release to contact(stop). Using the timer program, the times from the right to left were lower than the times from left to right. With the set up reasonably the same my conclusions is that the work table I'm using has a slope in it meaning the right side of the table is higher than the center of the table.
** Your report of 5 trials each way for 2 dominoes **
I was thinking to try to be sure to conduct the experiment in a consistent way to achieve consistent results considering the previous results indicated the table was uneven.
right to left
1.089
1.094
1.078
1.031
1.063
left to right
1.250
1.203
1.250
1.270
1.222
I placed 2 dominoes under the ramp to increase to slope which would increase the steel balls velocity. Using the timer to record the rolling time, the ball rolling from right to left still was faster than left to right because of the uneven table but the difference was less than at the slower velocities from the preceding experiment.
** Your report of 5 trials each way for 3 dominoes **
right to left
.828
.828
.891
.848
.828
left to right
.906
.969
.887
.922
.969
My conclusions is the table is still sloping more from right to left than from left to right but as the slope angle increases the differential between the 2 trials becomes closer and closer in respect to the table not being level
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
My results fully support my reasoning that the steepest ramp would take less time for the ball to travel down the ramp. The steeper the slope, the less the time interval from start to stop.
** How do you think ave velocity is related to slope? **
The average velocity will increase with the increase of the ramp slope. vAvg = 'ds/'dt In this formula for avg velocity any reduction of time will increase the avg velocity which you could say avg velocity is inversely proportional to the time meaning if time went up the avg velocity would go down and if time went down the avg velocity would go up
** Speculate on why ave velocity changes with slope. **
It's possible the Earth's gravity would play an important part on the avg velocity change
** How could you test your speculations? **
The Earth's gravity is a specific factor and the closer you come to vertical the more the gravitational pull will effect the velocity until some terminal velocity is reached.
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1 hour and 15 minutes
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Very good data and analysis. Let me know if you have questions.