Fetching details from the dictionary...
to throw; to toss; to fling
to abandon (one's work); to give up; to lay aside
彼は怒りまかせにスマホを放り投げた。
He flung his phone in a fit of anger.
子供がおもちゃを放り投げているのを見て叱った。
I saw the child tossing toys around and scolded them.
不満があるからといって仕事を放り投げるのは無責任だ。
Abandoning your work just because you're dissatisfied is irresponsible.