final report

docx

School

East Carolina University *

*We aren’t endorsed by this school

Course

1251

Subject

Physics

Date

Dec 6, 2023

Type

docx

Pages

Uploaded by ProfWillpower7974

Brenden Strom Physics lab 1251 9/14/23 Do two people have the same reaction time? Section 1: During this investigation we were trying to answer the guiding question “do two people have the same reaction time” by taking two random people and doing a reaction test 15 times to measure the average of their times. Reaction time is a measurement of how quickly you can identify a signal and produce a response. There are many variations of uncertainties that can play into the measurement values like distractions, errors, and mishaps. There are many things you can do to reduce statistical errors like taking more samples, disregarding the errors, or just letting them be and seeing how they affect your measurement. We use the standard error as our best estimate of the uncertainty of the mean. We are also looking for any discrepancies that many be in the measurement because they can determine whether the measurement values are the same or different. The guiding questions relates to all the key scientific concepts because when you are measuring reaction time of two different people, you must get all the data including errors, averages, estimates, and uncertainties because then you have samples and proof to show that two people either can or can not have the same reaction time. Section 2: We completed our investigation by using the online reaction test that was provided to us in the lab manual. The data we collected for this investigation was the times for the two people. They were measured 15 separate times each (in m/s). We wanted the tests to be as random as they could be just so we have a good result, so we started by choosing a number 1-4 out of our group and then we let Siri pick a random 1-4 number twice. Those two people then took the reaction test 15 times each and we

recorded each time they had. We made the test a little more challenging by making the star you had to click on, pop up in random spots so you are not expecting it to be in the same place. We thought that would make it a little more realistic because when you react to something you might not always be focused on it already. We made sure we had consistent measurements/ reducing error by going outside into the quiet hallway where we did not have any major distractions, and we also disregarded the times where the computer clicker malfunctioned so we could have accurate results. Section 3: Our claim to answer the guiding question “do two people have the same reaction time” was that they do have the similar reaction time. Not everyone will have the same exact reaction time, but they can be very close to each other after doing research. According to our data that we collected, Person 1 had an average of .1057 m/s, a STDev of .149 m/s, and a standard error of .0379 m/s. Person 2 had a average of .1428 m/s, a STDev of .227 m/s, and a standard error of .0715 m/s. Our best estimate and uncertainty for Person 1 was (0.11±.04) m/s and for Person 2 it was (0.14±.07). We know the values are the same because the discrepancy equals .03 m/s and the total uncertainty is .11 m/s. If the discrepancy is less than the total uncertainty, then the data is the same. But if the discrepancy is greater than the uncertainty, then it is different. With the total uncertainty being higher than the discrepancy in our data, we concluded that the values are considered the same. Table 1 Average STDev ST Error Uncertainty Person 1 .11 m/s .15 m/s .04 m/s (.11±.04) Person 2 .14 m/s .23 m/s .07 m/s (.14±.07) Table to show our data we collected during the investigation.

When we did our argumentation and we got to go to other groups to see their experiment we got to see a couple different things. One group had reaction times that were the same and another group had different results. The group with the same reaction results did it by using a ruler and dropping it to find their reaction time and the group with the different reaction times also did the ruler drop method. I believe that if they did their investigation right then the results, they got are good. Some people have the same reaction time, and some people don’t, so I don’t disagree with the group that has different reaction times because that is what they found out through trials. In conclusion, the reaction time test my group did lead us to the result that the two people did have the same rection time. Section 4: After my peer review, I had gotten some really good feedback from my peers. There wasn’t much I needed to change but what I did add was talking about the data we collected and why, and how our data compared to the other groups we looked at. Looking at the peer reviews I did also, I knew I had to go back and fix some things up because I missed a couple things that I wouldn’t have even noticed without looking at another paper for inspiration. I don’t disagree with anything my reviewers said to me because I think criticism is good for you sometimes especially when writing something for a grade. The more eyes that you get on your paper and that you get to look at other papers, the more you will understand what you need to do and how to complete it to the best of your ability.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

Related Documents

105_friction_report_f23.odt

P131 S2022 Exam 1 TR solutions.pdf

chap 6 and 7.pdf

chap 1 and 2.pdf

physics I-2 lab report.docx

Physics Lab 1 RD Lab Report.pdf

Draft report.docx

SPH3U Lesson Assignment 6 (docx).docx

SPH3U Lesson Assignment 5 (docx).docx

SPH3U Lesson Assignment 3 (docx).docx

LAB 4.docx.pdf

Ch_9.docx

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text

Physics

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Cengage Learning

Inquiry into Physics

Physics

ISBN:9781337515863

Author:Ostdiek

Publisher:Cengage

Physics for Scientists and Engineers: Foundations...

Physics

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Cengage Learning

Astronomy

Physics

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:OpenStax

College Physics

Physics

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Cengage Learning

Intro Spectroscopy

Physics

ISBN:9781305221796

Author:PAVIA

Publisher:Cengage

SEE MORE TEXTBOOKS

Recommended textbooks for you

Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Inquiry into Physics
Physics
ISBN:9781337515863
Author:Ostdiek
Publisher:Cengage
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Intro Spectroscopy
Physics
ISBN:9781305221796
Author:PAVIA
Publisher:Cengage