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suppose two different data sets were recorded after an at - rest billiard ball was pushed hard while keeping all of the experimental conditions the
suppose two different data sets were recorded after an atrest billiard ball was pushed hard
while keeping all of the experimental conditions the same. The velocity was recorded as a
function of time over a fixed time interval. You will find the experimental acceleration using
both data sets provided in Table
Time in s Velocity in ms Velocity in ms
Table data sets for the same experimental conditions
Type the provided data in Excel. For example, the data in the time column could be in
Column A the Velocity data could be in Column B and the Velocity data could be in
Column C
Create a Scatter Plot with Points such that the two sets of data are visible on the same
plot. Make sure the two sets of data are represented by different symbols and colors, and
include a legend to show which data points belong to which trial.
Add trendlines for each individual data set.
a Insert a trendline and slope equation that applies only to the first set of data
Velocity
b Insert a second trendline and slope equation that applies only to the second set of
data Velocity Change one of the trendlines to a different color, dotted or
dashed line so that the two lines are distinguishable.
c Use some kind of labeling scheme to distinguish the two trendline equations.
d Be sure to label the axes and provide a descriptive title. Use the checklist
provided to you on page Save this plot for your lab report.
e Record the separate slope equations in Q of InClass Questions
Now, you want to create one data set from the two you have so that you can find a single
best fit for all the data.
a Start by copying the two data sets into a single time column and a single velocity
column. You will have two columns of data instead of three.
i In a new column, copy & paste the time range twice so that the time data
set is stacked on top of itself.
The new time iterations should start in a new cell right after the
previous data range ends. For example, if the first Xaxis range is in cells
AA then the second Xaxis range is in cells AA
ii Being consistent with the previous step, the first data set for velocity could
be copypasted into BB and the second data set could be copypasted into BB
b Using this new data set, create a Scatter Plot with Points Make sure all data
points appear in the same color. Insert a trendline and show the trendline equation
on the plot.
c Be sure to label the axes and provide a descriptive title. Use the checklist
provided to you on page Save this plot for your lab report.
d Record the separate slope equations in Q of InClass Questions
InClass Questions
What is the slope equation of the plot for
a Data Set
b Data Set
c Combined data sets:
What is the slope of each plot? Remember the units.
a Data Set
b Data Set
c Combined data sets:
Which billiard ball was traveling faster? How can you tell from your graph?
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