How do ranged weapons work with the *time stop* spell?

In 5e, *time stop* ends when I directly affect another creature - in other words, if I cast a spell that affects another creature or try to hit somebody with a melee weapon. How does this interact with ranged attacks?

* If I shoot an arrow or use a sling, will my missile keep going? Or
will it stop when it leaves my bow/sling?
* If I throw a bunch of knives, will they keep going and hit an enemy,
breaking my *time stop*? Or will they stop moving once they leave my
hand, and resume motion only once time has begun to move normally?

On a related note, if I were to use the *creation* spell while *time stop* was active to drop a 5-foot cube of steel on top of an enemy's head, that would wait until normal time to actually fall on them, right? It wouldn't fall in stopped time and break it early, would it?

(I'm not asking for any particular reason; I just thought it might be nice to have this information.)