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All Journal Kappa Journal JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Elisa Siregar
Universitas Negeri Medan
Astronomy Education Electrical & Electronics Engineering Energy Physics Other

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Simulasi Gerak Pengejaran Misil terhadap Target dengan Lintasan Melingkar Menggunakan Python Lourensia Bravini Lahera; Cinta Marcella Namira; Elisa Siregar; Dewi Wulandari; Howard Situmorang; Yuni Warty
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 2 (2025): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i2.4734

Abstract

This study aims to model the pursuit motion between guided missiles and a circularly moving aircraft using Python-based numerical simulation. The target moves along a circular path with a constant angular speed, while the missile follows a pure pursuit strategy, continuously adjusting its path toward the target's current position. Two scenarios are simulated: single pursuer and multi-agent pursuers. In the single-missile scenario, the missile forms a spiral trajectory and intercepts the target in approximately 4.9 seconds. In the multi-agent configuration, five missiles launched from different vertical positions successfully destroy the target within 8.3 seconds, with the first interception occurring at 6.7 seconds. The model is based on numerical solutions of differential equations governing relative motion dynamics. The results demonstrate that increasing the number of pursuers enhances interception speed and system effectiveness. The study is supported by animations, distance-time graphs, and damage analysis.
Paradoks Kembar (Twin Paradox): Analisis dan Resolusi dalam Kerangka Teori Relativitas Khusus M. Fadly; Hizkia Natanael Simatupang; Yanti Seniawati Aritonang; Amisha Sihite; Elisa Siregar; Jujur Marholong Purba; Deo Demonta Panggabean; Ladestam Sitinjak
Kappa Journal Vol 10 No 1 (2026): Kappa Journal
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v10i1.32574

Abstract

The Twin Paradox stands as one of the most challenging thought experiments in Einstein's special theory of relativity, seemingly revealing an internal contradiction within the theory itself. This paradox illustrates the scenario of twin siblings where one travels through space at relativistic speeds while the other remains on Earth. A naive analysis from both perspectives yields contradictory conclusions: each twin predicts the other would be younger. This apparent contradiction forms the core of the paradox. The paradox can be completely resolved within the framework of special relativity without needing to invoke general relativity. This research uses a library research method by collecting data from various relevant sources that support the twin paradox in the concept of time expansion. Experimental verification through the Hafele-Keating experiment with atomic clocks and observations of atmospheric muon decay confirms the theoretical predictions.
Co-Authors Amisha Sihite Cinta Marcella Namira Deo Demonta Panggabean Dewi Wulandari Hizkia Natanael Simatupang Howard Situmorang Jujur Marholong Purba Ladestam Sitinjak Lourensia Bravini Lahera M. Fadly Yanti Seniawati Aritonang Yuni Warty