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 am under the impression times would be less as the ramp slope increases.
** As slopes increases will time intervals increase, decrease or show no pattern? **
From least to greatest slope, I believe the times would be gradually decreasing.
** Your report of 5 trials each way for 1 domino **
1.547s
1.453s
1.484s
1.547s
1.563s
1.656s
1.453s
1.562s
1.469s
1.656s
The data shows the interval in seconds of how long it takes the ball to roll down a 27.3cm ramp at a slope of 1-domino. We can then average these numbers, resulting in it takes an average of 1.542s for the ball to travel 27.3cm at a slope of 1 domino. It was collected by using a piece of shelving with the edge overlapping 1-domino by .5cm. The ball was placed 3cm from the end of the shelving, and a domino was used to hold the ball in place. Then timer would be initiated at the exact same moment that the domino was released, then the timer was clicked when the ball would hit the bracket at the end of the ramp.
** Your report of 5 trials each way for 2 dominoes **
1.281s
0.984s
1.078s
1.062s
1.062s
0.922s
1.047s
1.047s
1.125s
1.094s
The data shows the interval in seconds of how long it takes the ball to roll down a 27.3cm ramp at a slope of 2-dominoes. We can then average these numbers, resulting in it takes an average of 1.070s for the ball to travel 27.3cm at a slope of 2-dominoes. It was collected by using a piece of shelving with the edge overlapping top doimino in a 2-domino stack by .5cm. The ball was placed 3cm from the end of the shelving, and a domino was used to hold the ball in place. Then timer would be initiated at the exact same moment that the domino was released, then the timer was clicked when the ball would hit the bracket at the end of the ramp.
** Your report of 5 trials each way for 3 dominoes **
0.750s
0.843s
0.859s
0.934s
0.934s
1.016s
1.016s
0.875s
0.781s
0.906s
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
These results support that the greater the slope, the lesser the time interval.
** How do you think ave velocity is related to slope? **
I believe that as slope increases, velocity increases because the time it takes for displacement to occur is decreasing as slope is increasing. So dividing displacement by time to find velocity will find you dividing by a smaller number everytime the slope increases. When you divide by a smaller number, the result will be increased.
** Speculate on why ave velocity changes with slope. **
I speculate higher slope causes greater acceleration.
** How could you test your speculations? **
We could use `dv amd `dt to find the average acceleration for the different slopes and see if rate of acceleration increases with slope to determine if there is greater acceleration at a greater slope.
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65min
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&#Your work looks very good. Let me know if you have any questions. &#