@article{thomaz_2021,  title={Newton’s Second Law of a particle with variable mass},  volume={43},  ISSN={1806-1117},  url={https://doi.org/10.1590/1806-9126-RBEF-2021-0090},  DOI={10.1590/1806-9126-RBEF-2021-0090},  journal={Revista Brasileira de Ensino de Física},  publisher={Sociedade Brasileira de Física - SBF},  author={Thomaz, M.T.},  year={2021},  pages={e20210090} }