No, it can't.
No They are on Blue Ray Discs not DVDs and CDs
No, PlayStation 3 is designed to play DVDs and Blu Ray movies.
Playstation 3 will play HD DVDs. You do not need an accessory to have the HD DVD work.
Yes.
The Playstation 3 plays both DVDs and Blu-Ray without a special adapter.
Yes, it plays blu-ray and regular dvds.
No PlayStation 2 and PlayStation 3 can play DVDs PlayStation 1 just will not be able to read the disc
Yes, just like the ps2.
Yes, a Playstation 3 can play a regular DVD. All Playstations can play regular DVDs.
NO PlayStation 3 games are distributed on Blu-ray Disc, which is read by means of a blue-violet laser with shorter wavelengths than the red laser used for DVDs (on which PlayStation 2 games are made). The PlayStation 2's optical drive only has a red laser, so it is only capable of reading DVDs and CDs. The PlayStation 3 has both blue-violet and red lasers, allowing it to read CDs, DVDs, and BDs.
Yes it will play DVDs besides playing Blue-ray Discs. It will also play CDs.
Games, dvds, blue rays, USBs etc...