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 will be the least for the steepest ramp.
** As slopes increases will time intervals increase, decrease or show no pattern? **
The time intervals would be decreasing.
** Your report of 5 trials each way for 1 domino **
2.094
2.109
2.019
2.063
2.047
1.656
1.547
1.531
1.578
1.609
The first 5 times are for the ball traveling right to left on a ramp raised by 1 dominoe. I then moved the dominoe to the left, being careful to keep it 0.5cm in from the end of the ramp. I marked in 3cm from the end of the ramp, just as I had done on the right hand side, and setup the ball to roll down from there. I must admit, I am a bit surprised in the time difference. Perhaps the table is not as even as I had thought. I tried to be listening for the clink for each hit and not anticipating it.
** Your report of 5 trials each way for 2 dominoes **
1.297
1.375
1.359
1.297
1.297
1.219
1.234
1.299
1.328
1.344
This time the ramp was raised on the right side with two dominoes, then reversed as before with two dominoes.
** Your report of 5 trials each way for 3 dominoes **
1.266
1.125
1.187
1.140
1.156
1.078
1.000
1.094
1.109
1.125
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
Yes. As more dominoes are placed under the ramp, the time interval required for the ball to travel the ramp decreases.
** How do you think ave velocity is related to slope? **
The higher the ramp, the higher the average velocity. Since the ball is starting from rest for each run and reaches the end of the ramp sooner with more dominoes, the final velocity and thus the average will be higher on a steeper slope.
** Speculate on why ave velocity changes with slope. **
As I stated before, the higher final velocity will cause a higher average velocity because in all runs, the initial velocity was 0.
** How could you test your speculations? **
I could find the average velocities using the displacement and clock time. Using the initial clock time of 0, I could find the final velocities of each run.
** **
About an hour.
** **
&#Very good work. Let me know if you have questions. &#