User talk:2409:4041:E1B:AA4C:72B8:9A0B:4851:A753

November 2021
Hello, I'm Serols. I noticed that you made a change to an article, Center of mass, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please do so! If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Serols (talk) 16:42, 17 November 2021 (UTC)