Tracker Video Analysis As A Pedagogical Tool For Teaching Uniform And Uniformly Accelerated Linear Motion: An Accessible Approach For Physics Education In Timor-Leste
Análise De Vídeo Com Tracker Como Ferramenta Pedagógica Para O Ensino Do Movimento Retilíneo Uniforme E Do Movimento Retilíneo Uniformemente Variado: Uma Abordagem Acessível Para O Ensino De Física Em Timor-Leste
DOI:
https://doi.org/10.30822/8nrh0c20Keywords:
Tracker video analysis, physics education, uniform linear motion, uniformly accelerated linear motionAbstract
This study investigates the use of Tracker video analysis as an accessible tool for exploring uniform linear motion (ULM) and uniformly accelerated/decelerated linear motion (UALM) in a resource-limited physics education context in Timor-Leste. Motion experiments were recorded with a smartphone and analyzed using Tracker to obtain position-time and velocity-time data, which were processed in Microsoft Excel for curve fitting and residual inspection. For ULM, the velocity remained approximately constant at v = 1.47 m/s, with apparent acceleration fluctuating around zero due to numerical differentiation. In accelerated UALM, quadratic position time and linear velocity time fits yielded a consistent acceleration of a = 1.68 ± 0.04 m/s² with coefficients of determination R² greater than or equal to 0.93 and relative deviation approximately equal to 1.2%. Decelerated UALM exhibited a small negative acceleration (a = -0.0118 m/s²) with an initial velocity of Vo = 0.54 m/s, producing nearly linear position-time behavior and a residual error of RMSE = 3.88 m. These results demonstrate that Tracker can reliably identify motion types and extract kinematic parameters when combined with external data analysis. Potential pedagogical use is discussed; however, formal learning outcomes were not measured and are recommended for future investigation
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