4/6/11

Yesterday in class, Mr. Finley had us think of everything we knew about speed. My group came up with the equation: rate multiplied by time equals distance or distance divided by time equals rate(velocity.) Then today we performed an experiment testing how fast we walked.
The first column is the number trial, the second column is the distance we walked, the thrid is the time it took to walk that distance, and the fourth is the speed in which we walked.

1 12 feet 3.19 3.76
2 12 feet 2.09 5.74
3 12 feet 3.06 3.92
4 12 feet 3.02 3.97
5 12 feet 2.67 4.94
6 12 feet 3.35 3.58
7 12 feet 2.61 4.60
8 12 feet 2.92 4.11
9 12 feet 2.80 4.29
10 12 feet 2.66 4.51
11 12 feet 3.67 3.27
12 12 feet 3.32 3.61
13 12 feet 3.38 3.55
14 12 feet 4.00 3.00
15 12 feet 3.14 3.82
16 12 feet 3.26 3.68
17 12 feet 2.94 4.08
18 12 feet 3.31 3.63
19 12 feet 3.09 3.88
20 12 feet 3.63 3.31

The average speed for our experiment was that we walked 3.96 feet per second. To make sure we had accurate results, we ran the test 20 times. If we ran the test one time our results may have been inaccurate, but now we know that our final average is an accurate number.

-JM