User talk:23hamnil

March 2022
Hello, I'm GoneIn60. I noticed that you added or changed content in an article, Vertical Velocity (roller coaster), but you didn't provide a reliable source. Another editor removed the change, which has been archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at referencing for beginners. If you have concerns about this, feel free to ask on my talk page or seek general assistance at the Teahouse. Thank you. GoneIn60 (talk) 20:01, 23 March 2022 (UTC)