BUTCH, Matthew; AHMADZADA, Omar; PAWELEK, Jacob; CHUNG, Timothy. Non-conservation of mechanical energy in spring-launching toy poppers. Journal of Science & Engineering, Englishtown, NJ, v. 2, n. 5, p. 83–85, 2026. DOI: 10.64804/rbrn1c37. Disponível em: https://j.snerds.org/index.php/jse/article/view/150. Acesso em: 26 may. 2026.