There was a thread running up until today, which contained questions and answers regarding how to detect the speed of a football kicked against a target.
Within that thread were replies from a number of our members, that obviously had taken a fair amount of the member's time to research and formulate.
It seems the OP was not satisfied with the help/advice they were being given, so they took the flounce route and deleted all of their posts within that thread.
I reported that the member had deleted their posts, around 5 minutes after their last activity on the thread, with the hope that the thread would be restored.
It would be of interest to know if that thread is going to be restored, because the forum is a historical record of every member's input.
The fact that the OP threw a hissy-fit and took their toys home should not invalidate other member's contributions.