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? **
I predict the time required will be the least.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I believe the time intervals would be decreasing with the increasing slopes.
** Your report of 5 trials each way for 1 domino **
1.766
1.734
1.5
1.563
1.813
1.547
1.781
1.625
1.766
1.766
I collected this data by setting up an experiment in two different ways. I first set it up (the first 5 set of numbers) with the domino raising the end of the ramp on the right with the bracket at the left. The second group, or the next 5 numbers, had the left side of the ramp raised with the bracket at the right. I did 10 trials in all releasing the ball and timing it from release to the point it struck the bracket. I then entered the numbers in a column with the first set first and then the second set following those five numbers.
** Your report of 5 trials each way for 2 dominoes **
I was thinking that I hoped I could make the times as accurate as possible because the deviations were probably due to human error.
1.109
1.234
1.203
1.188
1.172
1.094
1
1.031
1.188
1.156
I obtained this data by doing the same as the last experiment with two dominoes under the end.
** Your report of 5 trials each way for 3 dominoes **
.875
.875
1.031
1.047
.953
.859
.984
.906
.984
.953
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
No, my results confirm my statements. The steeper the slope, the faster the time and the less the slope, the slower the time it takes to reach the bottom.
** How do you think ave velocity is related to slope? **
The average velocity of the ball is affected by the slope. The average velocity is defined as the change in position divided by the change in time. Since there is a change in position, or the elevation, the time will then be changed as well. With the increased height, it adds speed, or velocity to the ball as it rolls and increases in speed down the ramp.
** Speculate on why ave velocity changes with slope. **
The ball's weight is involved more when it rolls from a higher place. The gravity also pulls it more since it is steeper. And when the slope is less, it does not fall as fast.
** How could you test your speculations? **
I could set up an experiment to test it. I could use different weight balls and see if the weight had anything to do with the reason it changes as it does.
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45 minutes
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&#Very good work. Let me know if you have questions. &#