Crazy Velocities Lab Report

Okay, so this literally has nothing to do with opera OR classical music. It's not even a movie review, but diversity is always a good thing and for some people Science may be a serious field of  interest. Here is a lab review on finding the average velocity of a moving object.

Question/Purpose

The purpose of the Crazy Velocities Lab was to find the average velocity of an activity with a given distance.

Experimental Hypothesis
The hypothesis that was offered predicted that the trials for each activity would vary either greatly or minimally from the trials of different activities, but be similar to the trials from the same activity.

Materials
·      Ruler (meter stick) – meter-long wooden stick with 1-inch grid markings
·      Timer – small, plastic box with a timing mechanism enclosed within.
·      Compass – small, plastic box with a magnet arrow positioned in the center of it held by a needle.
·      Calculator – small, plastic box with a specific integrated circuit that has provided a calculating

Procedures
1.     An area for performing the activities was chosen and measured with a meter stick.
2.     The direction in which the activities were to be performed was chosen and then determined with the use of the compass.
3.     The activities, walking, skipping, running, hopping, and grapevining, were then chosen. Each member of the group received a chance to perform one of the activities while another member used the timer to time the amount of seconds it took to perform the current activity.
4.     After all three trials were performed, the average time was figured out with the help of the calculator.
5.     Then, the average and velocity was figured out also with the help of the calculator.
6.     All of these steps were done for all five activities.

Data
1.    Tables and Graphs
Table of Collected Data
Activity
Trial 1 (s)
Trial 2 (s)
Trial 3 (s)
Average (t)
Distance
Direction
Average m/s
Walk
6.18
5.74
5.47
5.79
5.13
Northeast
0.89
Skip
3.06
3.12
3.09
1.35
5.13
Northeast
1.66
Run
1.58
1.3
1.18
1.35
5.13
Northeast
3.80
Hop
4.30
4.19
4.34
4.27
5.13
Northeast
1.20
Grapevine
2.59
2.46
2.71
5.13
5.13
Northeast
1.98

Graph of Collected Data

This graph shows all of the data gathered from the activities: walking, skipping, running, hopping, and grapevining.

   2.    Calculations
Adding up all of the trial times and dividing them by three determined the average time in seconds. Average = (Trial 1 + Trial 2  + Trial 3) ÷ 3.
Walk: (6.18(s) + 5.74(s) + 5.47(s)) ÷ 3 = 5.79(s)
Skip: (3.06(s) + 3.12(s) + 3.09(s)) ÷ 3 = 3.09(s)
Run: (1.58(s) + 1.30(s) + 1.18(s)) ÷ 3 = 1.35(s)
Hop: (4.30 + 4.19(s) +4.34(s)) ÷ 3 = 4.27(s)
Grapevine: (2.59(s) + 2.46(s) + 2.71(s)) ÷ 3 = 2.58(s)
Now that the average time is figured out for all of the activities, it is possible to figure out the average velocity.
Average Velocity = Displacement ÷ Average Time. The displacement is the amount of territory that the person has covered from the starting point. In this case, the displacement is 5.13(m) in all cases.
Walk: 5.13(m) ÷ 5.79(s) = 0.89(m/s)
Skip:  5.13(m) ÷ 3.09(s) = 1.66(m/s)
Run:  5.13(m) ÷ 1.35(s) = 3.80(m/s)
Hop:  5.13(m) ÷ 4.27(s) = 1.20(m/s)
Grapevine:  5.13(m) ÷ 2.58(s) = 1.98(m/s)

Analysis
1.    Making Sense of the Results
There is a consistent pattern in all three trials of all five activities. The amount of whole seconds for each activity stays the same, or close to the same, as the very first measurement. For the walking activity, the first trial was 6.18 seconds. Trial two was 5.74 seconds. The two numbers are very close to each other. Trial three was 5.47 seconds. This number is less than the first trial, but it is close to the first one. The same applies to the skipping activity. All three trials ended up happening in the three-second time zone.
2.    Predictions
What if the person hopping hopped on two feet instead of one? The time would probably go down a little bit, for hopping on one leg is harder than on two. Also, the manner in which somebody runs also controls how much time it will take. If the person took big steps but went slowly his speed would most likely be close to the speed of the person who ran quickly but took small steps. Or maybe their speeds would be completely different?  
3.    Error Discussion
·      Measurement Error
·      What Was Being Measured?
(Measurement Error)
·      Pressing the start button on the timer to quick
·      Performing the activity beginning at the starting point instead of beginning a few paces before the starting line.
Some measurement errors included pressing the start button on the timer a split second before the person performing the activity began the activity. This caused the digits after the decimal to be different from what they would be if the timer were exact. This error may have caused some digit differences and the velocity could be different for other people performing this experiment.
Another error was that the people performing the activity began doing the action right at the starting point. Because of this silly mistake the measurement must be incorrect, keeping in mind that there must have been acceleration present. The person in action would have been at a constant velocity if he had started the action a few feet before the starting point. Since it took him a couple of paces to get into a constant velocity, there was acceleration in the movement.


(What Was Being Measured) The goal of the experiment was to figure out the average velocity of each activity. In order to find the average velocity, three trials, distance, and an average time was required.    

Conclusion
1.    Explaining
·      Was The Purpose Achieved?
·      Was The Hypothesis Proved?
·      What did the Participants of the Experiment learn?
(Was The Purpose Achieved) The purpose, being to figure out the velocity of different activities, was achieved. The participants performed three trials for each activity and recorded the results. The average time was then determined, and with the given numerals the average velocity was figured out.
(Was The Hypothesis Proved?) The hypothesis was proved. As was stated before, the hypothesis was that the trials for each activity would vary either greatly or minimally from the trials of different activities, but be similar to the trials from the same activity. This was the case in the collected data. All of the trials had similar amounts of second, but only within one activity. The trials from different activities were unrelated.
(What did the Participants of the Experiment learn?) The participants learned that it was hard to make an exact amount of seconds to come up on the timer when it was stopped. A decimal was always involved in the result. 


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