User talk:78.86.145.238

December 2018
Please refrain from making unconstructive edits to Wikipedia, as you did at Drag (physics). Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. - Arjayay (talk) 11:13, 10 December 2018 (UTC)