RipStik Linear



This term I started from the LRC and headed east. I measured each column using a tape measure. Zero was the first gray post just barely visible on the left.
 
time (s) distance (cm) v (cm/s) a (cm/s²)
0 0 157 0
1.94 304 157 0
3.63 610 181 14.42
5.28 930 194 7.80
6.98 1232 178 -9.58
8.60 1535 187 5.80
10.16 1842 197 6.26
11.72 2147 196 -0.82
13.66 2454 158 -19.21




There is a slight downslope at the start of the run, which gave me a very slight boost in velocity. The gain is only clearly visible in the data table. On a graph the data plots linear with a correlation coefficient r of 0.9997.





Plotting only the velocity and acceleration reveals the slight shifts in velocity.

The changes in velocity are small enough that they are difficult to discern in the time versus distance velocity chart.

At other locations I have taken the interpost spacing to be constant, but in this case the fourth post is a little long. The following table records the post-to-post distances. Not including the 320 cm interpost distance, the average is 305 centimeters - essentially exactly ten feet.
Interpost

304
306
320
302
303
307
305
307

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