Siswanto, S., Hartono, H., Subali, B., Marwoto, P., & Iswari, R. S. (2023). Which Arrived First? A Simple Experiment Using Smartphone to Analyze Parabolic and Free Fall Motion Simultaneously. International Conference on Science, Education, and Technology, 7(1), 533–538. Retrieved from https://proceeding.unnes.ac.id/ISET/article/view/2010