[sirmarksalot]

I remember two programs like that, one that my middle school had called "Fun Physics," and one my high school had called "Conceptual Physics." The interfaces were exactly the same, and it wouldn't surprise me if Conceptual Physics was a rebundled version sold along with Paul Hewitt's course. Unfortunately, those names are so generic that I can't find them on Google.

[Throw6away]

You could author workspaces in Working Model and I dimly remember Fun Physics was built using WM.

[aasasd]

Old software can frequently be found on archive.org—with much more focused selection than ‘the whole web’.