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 interval for rolling down the steepest ramp will be the least.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I think the time intervals would decrease as the severity of the slope increases.
** Your report of 5 trials each way for 1 domino **
1.859
1.906
2.031
1.937
1.703
1.719
1.937
1.828
1.812
1.875
I took 10 time observations of the ball rolling down the incline. First 5 observations were made, then the ramp was reversed and the last five trials were made.
** Your report of 5 trials each way for 2 dominoes **
.844
1.156
1.281
1.218
1.156
1.062
1.203
1.203
1.047
1.078
Placed two dominos under the end instead of one, took five time readings, reversed the two dominos, and took 5 more readings.
** Your report of 5 trials each way for 3 dominoes **
.922
.922
.953
.844
.937
.937
.953
.812
.859
.906
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
Definitely supports my hypothesis that interval goes down as a function of the severity of the slope. The avergae times dropped with each increase in slope.
** How do you think ave velocity is related to slope? **
The average velocity climbs as the slope increases. Slope is rise/run. The run in all three trials was 28.5 cm and each domino is about .85 cm thick so the slopes and avg dt were about .03-1.9,.06-1.1, and .09-.9 for the three trials. So comparing the first trial to the last, the slope tripled and the time interval was reduced by about 1/2.
** Speculate on why ave velocity changes with slope. **
As the slope increases the force of gravity also increases as you get closer to vertical.
** How could you test your speculations? **
Could continue more trials at ever steeper slopes.
** **
45 minutes
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I think my desk top is close to level so I was not surprised that the average times did not change when switching ends.
This looks great.