It is important to note that while the Internet Archive is a non-profit library, Iron Man 2 is a copyrighted property owned by Disney. Most "Internet Archive" searches for the full movie are met with "Collections" that emphasize preservation rather than piracy. The Archive’s primary value lies in saving the ephemera —the posters, the interviews, and the defunct websites—rather than acting as a free streaming service. How to Explore the Iron Man 2 Archives
It is vital to address the elephant in the room. Iron Man 2 is copyrighted by Marvel Studios and Disney. The Internet Archive operates under a "Lending Library" model for some media (requiring a free account to "borrow" a digital copy), but many uploads are technically infringing. iron man 2 internet archive