arc over

"Jack threw the tennis ball and watched it arc over the washing line to bounce at the far edge of the lawn". What is the grammatical form and function of "arc over"? How do we rule out if it's a phrasal verb or not?

I read the above in D-DAY DOG by Tom Palmer.

Arc is a verb (third person simple present) and over is a preposition. The only way to know whether a verb-preposition combination is a phrasal verb is to know the definition of the phrasal verb and weigh up whether it makes sense. In this case arc over does exist as a phrasal verb but refers to electricity, so clearly doesn’t fit.

You could replace it with "fly over", "zoom over"... or "arc above", "arc across", ... without much change to the meaning. Both words have their normal meanings so it's not a phrasal verb.