Phy 201
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 steepest ramp will produce the least amount of time required for the ball to roll down it.
** As slopes increases will time intervals increase, decrease or show no pattern? **
The time intervals will be decreasing is the slopes are going from least to greatest.
** Your report of 5 trials each way for 1 domino **
.639
.750
.625
.828
.679
.664
.804
.632
.773
.867
The 1st 5 intervals are the times in seconds it took the ball to roll from right to leftt, with one domino under the right end of the ramp. The ball is held back back another domino and then released. The 2nd 5 intervals are the time in seconds it took the ball to roll from left to right down the ramp, with one domino under the left end of the ramp. The ball is held back by another domino and then released. While performing these trials the velocity appears to be averagely the same whether being released from the right or the left as long as the slope of the ramp is the same.
** Your report of 5 trials each way for 2 dominoes **
.425
.414
.453
.512
.463
.532
.428
.465
.489
.514
The 1st 5 intervals are the times in seconds it took the ball to roll from right to leftt, with 2 dominos under the right end of the ramp. The ball is held back back another domino and then released. The 2nd 5 intervals are the time in seconds it took the ball to roll from left to right down the ramp, with 2 dominos under the left end of the ramp. The ball is held back by another domino and then released.
** Your report of 5 trials each way for 3 dominoes **
.257
.351
.286
.314
.312
.321
.289
.272
.341
.246
The 1st 5 intervals are the times in seconds it took the ball to roll from right to leftt, with 3 dominos under the right end of the ramp. The ball is held back back another domino and then released. The 2nd 5 intervals are the time in seconds it took the ball to roll from left to right down the ramp, with 3 dominos under the left end of the ramp. The ball is held back by another domino and then released.
** Do your results support or fail to support your hypothesis about increasing or decreasing times? **
My results support the hypothesis that the greater the slope the smaller the time interval.
** How do you think ave velocity is related to slope? **
The greater the slope, the greater the average velocity. As slope increase the velocity of the ball down the ramp also increases and this is reflected in the fact that the time interval decreases as the slope increases.
** Speculate on why ave velocity changes with slope. **
The slope formula is the same thing as average acceleration. With greater acceleration you get greater velocity.
** How could you test your speculations? **
First determine the change in velocities by comparing the data you've collect from the different trials and then from there you can use the formula for average acceleration (or slope) to determine the relationship between velocity and slope.
** **
40 minutes.
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The shelving included in my lab kit, which was used as the ramp in this experiment was 15 cm long, instead of the specified 30 cm long.
This looks very good.