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Texas Tech University *

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1105

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Physics

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Apr 3, 2024

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LAB 1 REPORT Section 01: July 4th Mortar Pivot Interactivities Giselle Paz 6/8/21 PHYS 1403
INTRODUCTION In this lab, we grow familiar with the concept of constant velocity. To understand this concept, we used an interactive video that shows a mortar launching a mortar shell. With the help of this video, we are able to learn and calculate average velocity. MATERIALS & SET UP The lab was website-based and utilized a video that was inclusive of the following materials: Mortar Mortar shell Ruler Timer PROCEDURE 1. First, begin by allowing the video to fully play to see the phenomena (mortar launching the mortar shell). 2. Allow the video to play once more; however, this time pause the video once you see the mortar shell launch from the mortar as shown below. 3. Within the website, some tools are to be used in the video - a ruler and timer. From where we paused it, align the ruler where it begins to launch. 4. Leaving the ruler, click the timer tool and reset it. 5. Now that the ruler and timer are ready, the video can be played. Here, you can measure both the position and time. On your timer, you should see where it reads Frame 19. Allow the video to play up to that frame to record the shell’s measurements entirely and record your time, final, and initial distances.
6. Lastly, record the time and position of 2 consecutive frames 5 times for a table. DATA & DATA ANALYSIS To calculate average velocity: Table & Graph The data is recorded from the time and position of 2 consecutive frames 5 times (image on the right). Using the table plot the points. The concept is constant velocity , thus we obtain a linear graph (image on next page). We are also given the RSME and r values (shown below). * A good fit for RMSE is a value near zero
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CONCLUSION The purpose of this lab was to understand the concept of constant velocity. When watching the video and following the aforementioned procedures, we are able to collect the data that can be used in the table to create a graph. After calculations, the average velocity is 5757.57 cm/s or 57.5757 m/s. Additionally, the RSME is 0.578 cm but after converting, 0.00578m, which indicates that it does not support the assumption of gravity. The reason why this claim is not supported is that the RSME is 0.578, which is sufficiently close to gravity. PERSONAL LEARNING EXPERIENCE I was hesitant and worrisome about using Pivot at first. After I followed the instructional 15-minute video, step by step, I was able to follow along pretty easily. I did, however, encounter a bit of trouble with formatting my graph correctly. In the end, my work coincided with that of the video and I obtained an RSME of 0.578 cm and an r =1.00. Overall, I enjoyed working with this platform and learning how to easily solve for average velocity.