Phy231
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 **
I used the 15cm shelf standard that came with my kit instead of the 30cm called for.
** Will a steeper ramp give greater or lesser time? **
least for the steepest
** As slopes increases will time intervals increase, decrease or show no pattern? **
decreasing
** Your report of 5 trials each way for 1 domino **
0.871
0.777
0.840
0.883
0.898
0.930
0.856
0.883
0.887
0.785
Time for marble to travel down 14.5 cm of grooved steel track when elevated by 1 standard domino at one end. Trials 6-10 done with grooved track reversed.
** Your report of 5 trials each way for 2 dominoes **
0.535
0.508
0.566
0.531
0.543
0.617
0.613
0.520
0.594
0.566
Time for marble to travel down 14.5 cm of grooved steel track when elevated by 2 standard dominoes at one end. Trials 6-10 done with grooved track reversed.
** Your report of 5 trials each way for 3 dominoes **
0.398
0.398
0.375
0.402
0.402
0.387
0.328
0.414
0.398
0.375
Time for marble to travel down 14.5 cm of grooved steel track when elevated by 3 standard dominoes at one end. Trials 6-10 done with grooved track reversed.
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
They support my hypothesis since as the slope increases the time the ball takes to travel track decreases.
** How do you think ave velocity is related to slope? **
The average velocity of the ball is higher the steeper the slope since it takes less time to travel the track.
** Speculate on why ave velocity changes with slope. **
As the slope increases the effect of gravity increases.
** How could you test your speculations? **
Read the next section. Measure slopes more precisely. Then chart a graph of time vs slope which should a linear decreasing line showing that as slope increases, the time decreases.
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90 minutes
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&#Your work looks very good. Let me know if you have any questions. &#