Rahmat Hidayat, Hidayati Hidayati, Fadhila Ulfa Jhora, Eka Susanti, Yohandri Yohandri
Galileo’s theory of accelerated motion, presented in the book discourses concerning two new sciences, was met with skepticism because the experimental procedure lacked an accurate timing method. Many attempts have been made to confirm the experiment using more reliable time-measuring instruments. In this study, a smartphone was used to record the motion of an object on an inclined plane to confirm Galileo’s experimental result. The time interval for the object moving on the inclined plane was measured for several variations in distance. The ratios of distances and the ratio of time squared were calculated and compared with Galileo’s theory. In addition, regression analysis was conducted to examine the relationship between distance and the square of time. This study confirmed Galileo’s theory of accelerated motion. © 2026 IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
Physics Department Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Jalan Prof. Dr Hamka, Air Tawar, Padang, 25131, Indonesia
