Phy 121
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 required for the ball to travel down the steepest ramp will be the shortest amount of time. This is becuase the greater the slope, the greater the rate velocity changes.
** As slopes increases will time intervals increase, decrease or show no pattern? **
The time intervals would be decreasing because a greater slope indicates a higher rate in change of velocity.
** Your report of 5 trials each way for 1 domino **
1.559
1.449
1.465
1.527
1.484
1.590
1.449
1.453
1.402
1.496
The data represents the amount of time in seconds it took for the ball to roll from the top of the ramp to the bottom. The starting point on the ramp was elevated by one domino. The data was collected by clicking the timer program when the ball starting rolling and when it stopped rolling.
** Your report of 5 trials each way for 2 dominoes **
1.109
1.125
1.063
1.105
1.090
1.121
1.141
1.043
1.105
1.078
This data represents the amount of time it took for the ball to get from one end of the ramp to the other. The starting point was elevated by two dominoes. The data was collected by clicking the timer program when the ball starting rolling and when it stopped rolling.
** Your report of 5 trials each way for 3 dominoes **
0.887
0.855
0.871
0.922
0.824
0.859
0.828
0.828
0.938
0.844
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
The results support my hypothesis because the steeper ramps had a shorter time interval.
** How do you think ave velocity is related to slope? **
The average velocity increases if the slope is positive. The rate the velocity changes increases as slope increases which represents acceleration.
** Speculate on why ave velocity changes with slope. **
The average velocity changes with the slope on these ramps because the distance the ball travels remains constant, but the amount of time it takes to travel the distance decreases. Therfore the velocity is increasing.
** How could you test your speculations? **
My speculations are valid because velocity is units of distance per units of time. If you divide into a constant distance, a smaller time will go into it more which would represent a higher velocity.
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1 hour
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&#Your work looks very good. Let me know if you have any questions. &#