"He bounced into the cubicle" or "He jumped into the water"
The question is whether "into the cubicle" or "into the water" is an object or not.
You have verbs of movement (to bounce, to jump) + a complement. The question-word for this complement is where-to. So these parts are adverbial complements of the sentence, and no objects. At least, that's the way I see it.
In en.wikipedia you will find an article about adverbial. But I would say it is a poor article. And the article does not treat one weak point of English grammar terminology.
There are word classes such as noun, verb, adjective, adverb and so on.
An adverb can consist of a single word or of several words, then I call it an adverb group.
The English term is "adverb phrase" (phrase is a very vague term).
Beside word classes there are parts of a sentence:
subject, verbal part, object, adverbial (complement).
English grammar terminology often does not clearly distinguish between word classes and parts of a sentence. In English grammars "adverbial" can be a single adverb, an adverb group (these two are word classes) and a part of a sentence. This imprecise use of grammar terms is not appropriate to make things clear. Actually such a terminology is botchwork.