course Mth 163
1/20/10 7:32
Questions Prior to Experiment•Does the depth seem to be changing at a regular rate, at a faster and faster rate, or at a slower and slower rate? Although it is hard to determine from the picture, the depth seems to be changing at a decreasing rate.
• What do you think a graph of depth vs. time would look like? If x values represented time and y values represented depth, the graph would be gradually decreasing in steepness as it moves left to right. An example of points I used to portray this are (0,8),(5,4),(10,2),(15,1)
• Does the horizontal distance (the distance to the right, ignoring the up and down distance) traveled by the stream increase or decrease as time goes on? It decreases
• Does this distance change at an increasing, decreasing or steady rate? An increasing rate.
• What do you think a graph of this horizontal distance vs. time would look like? The steepness of the graph would increase as the points move to the right. An example of points could be (0,10), (5,8), (10,5), (15,1) if x represents time and y represents distance.
Questions After Experiment
The following questions were posed above. Do your data support or contradict the answers you gave above? The data seems to support the given answers.
• Is the depth changing at a regular rate, at a faster and faster rate, or at a slower and slower rate? The depth is changing at a decreasing rate.
• What does the graph of depth vs. clock time look like? It is a gradually curving line which decreases in steepness as it moves left to right.
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&#This looks good. Let me know if you have any questions. &#