However, I cannot directly provide or link to copyrighted PDF files. Many such problem collections (e.g., from authors like M. Dănescu, C. Munteanu, or Editura Art, Teora, Paralela 45) are protected.
I understand you're looking for a PDF of solved physics problems for 9th grade (presumably Romanian "clasa 9" curriculum), titled Culegere probleme rezolvate fizică clasa 9 PDF . culegere probleme rezolvate fizica clasa 9 pdf