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 believe that the time required for the ball to roll down the steepest ramp will be the least.
** As slopes increases will time intervals increase, decrease or show no pattern? **
I believe that the time intervals required for the ball to roll down the ramp will decrease as the slope of the ramp increases.
** Your report of 5 trials each way for 1 domino **
2.031
2.047
2.094
2.062
2.031
1.578
1.547
1.453
1.531
1.437
The first 5 numbers are the timed trials in seconds of a ball rolling down a 30 cm long ramp that is elevated by 1 domino layed down flat and resting .5 cm under the end of the ramp.
The second 5 numbers are the time trials in seconds of the same ball rolling down the same ramp elevated at the other end by the same domino resting .5 cm under the end of the ramp.
The times being shorter on the second trial gives good evidence that the ramp is not as level as i believed it to be.
** Your report of 5 trials each way for 2 dominoes **
1.328
1.312
1.328
1.281
1.359
1.297
1.359
1.281
1.281
1.359
The first five numbers are the time trials in seconds of a ball rolling down a 30cm ramp that is elevated by 2 dominos laying flat with the numbers showing up. The dominos are 0.5 cm under the end of the ramp.
The second five numbers are the time trials in seconds of a ball rolling down the smae ramp that has been elevated by the same 2 dominos under the under end of the ramp.
** Your report of 5 trials each way for 3 dominoes **
1.187
1.141
1.156
1.172
1.141
1.047
1.094
1.094
1.031
1.062
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
They support my hypothesis.
As the slope of the ramp increased the time interval to reach the bottom decreased.
** How do you think ave velocity is related to slope? **
I believe that the average velocity of the ball is going to be higher as the incline of the ramp in increased. This is supported by the fact that the ball traveled the same length in less time as the incline was increased.
** Speculate on why ave velocity changes with slope. **
As the slope increases the ball rolls guicker. It starts out quicker and it rolls quicker all the way down the ramp. Even though it is traveling the same distance. Same distance in less time means higer average velocity.
** How could you test your speculations? **
You could continue to elevate the ramp to see if the result continue to follow the same pattern.
** **
1 hour.
** **
I don't know what the shelf standard ramp is. I just created a ramp and leveled it as best I could.
Presumably the list of lab materials and the picture on the page would show you what is meant by the 'shelf standard ramp'. However the picture isn't all that clear, and you might not yet have been asked to check the list of materials.
The ramp you used will do fine, but send me a brief description of the ramp, including its length and how and where it was supported (information sufficient to determine its slope for each trial). I assume that the ball was not in any sort of groove as it rolled down the ramp.
Your data will provide a useful comparison with data observed for the shelf standard ramp.
Do use the shelf standard ramp for subsequent experiments, where you will require more control over the path of the ball.