Your work on ball down ramp 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 mentioned this in another experiment, but my computer will not run the TIMER program. It will, however, run the TIMER program without file options. This is what I have been using. Is this a problem?
Will a steeper ramp give greater or lesser time?
The time required to roll the ball down the steepest ramp will be the least because the ball will roll faster. With a steeper grade the ball's velocity increases as it travels down the ramp, which decreases the time it takes to get to the bottom.
As slopes increases will time intervals increase, decrease or show no pattern?
If the slope were written from least to greatest, the corresponding time intervals would be decreasing. This is because as slope increases, the velocity of the ball increases, and the time interval to reach the bottom decreases.
Your report of 5 trials each way for 1 domino
1.703
1.828
1.750
1.828
1.703
1.688
1.750
1.734
1.703
1.750
Your report of 5 trials each way for 2 dominoes
While I practiced and then performed the trials, I was anticipating the initial movement of the ball and the point at which it struck the bracket. I could get the timing almost perfect.
1.203
1.250
1.219
1.250
1.250
1.234
1.188
1.125
1.188
1.219
Your report of 5 trials each way for 3 dominoes
.938
.969
.906
.906
.938
.891
.859
.750
.828
.937
Do your results support or fail to support your hypothesis about increasing or decreasing times?
My results support my hypothesis earlier in which I stated that a ramp with a steeper slope would have a shorter time interval. With one domino, my average time interval was 1.744 seconds. For a ramp with two dominoes beneath it, the average interval was 1.21 seconds. Finally, for a ramp with three dominoes under it, the average time interval was 0.892 seconds.
How do you think ave velocity is related to slope?
Yes, average velocity of the ball is related to the slope of the ramp. As the slope of a ramp increases the velocity of the ball traveling down the ramp increases. This means that slope expresses the rate of change in velocity.
Speculate on why ave velocity changes with slope.
Since there is a greater incline, there is less gravitational resistance. The motion of the ball down the ramp accelerates and the ball reaches the end quicker on a steep grade than one that is more level. Therefore, the time interval between release of the ball and hit is decreasing as slope and velocity increase.
How could you test your speculations?
By repeating the experiments, graphing results, and analyzing final data. A graph of the data would show that as velocity increases, slope increases, and time interval decreases. Also, the experiments would have to be done with precise instruments that can more accurately time the process.
Your responses have been reviewed and everything looks good.
Please let me know if you have any questions related to this orientation assignment.