Questions & Answers about Ne znam kuda ide pošiljka.
Because kuda asks about direction or route, not just location.
- gde = where in the sense of at what place
- kuda = where to / which way / along what route
In Ne znam kuda ide pošiljka, the idea is not Where is the package right now? but What way is it going? / Where is it headed?
So kuda fits better with a verb of movement like ide.
Kuda is an interrogative/relative adverb used with movement. It can mean:
- where to
- which way
- along what route
In indirect questions, as in this sentence, it often means something like where it is going or which route it is taking.
So Ne znam kuda ide pošiljka is literally close to:
- I don't know where the package is going
- I don't know which way the package is going
Yes, ide literally means goes, from the verb ići = . But in Serbian, just like in English, verbs of motion are often used for things that are being transported.