iPad 2 has better specs.
Check the review below(sources)
The main difference between the iPad 1 and 2 is that the iPad 2 is thinner and lighter than the iPad 1. The iPad 2 is also faster than the first iPad and the iPad 2 has front and rear cameras.
ipad 2 is one third thinner than ipad 1 ipad 2 has a dual core 1ghz a5 chip and ipad 1 has a single core 1ghz a4 chip so ipad 2 should have almost twice as much processing power ipad 2 has 2 cameras and ipad 1 doesn't have any cameras
Yeah, it does. Every iPad has a built-in camera that can record video—just open the Camera app and switch to Video mode. You can shoot, edit, and share right from there.
Yes, an iPhone and iPod cable will also work. The AC power adapter is different with the iPad, but the cable is the same.
The iPad 2 and 3 have Cameras! The iPad 1 does not!
Yes, though the iPad 3 is one mm thicker than the iPad 2
To replace the iPad 1 and improve it.
yes
No. The camera was introduced in iPad 2.
The iPad 1 and iPad 2 both had a resolution of 1024x768, for a total of 786432 pixels.
The iPad 3 is rumored to be different than the iPad 2. The main differences are a better quality screen and pricing differences.
Only Apple Apps such as 'iMovie' will really be 'iPad 2' Only Apps. All iPad 1 Apps will work on the iPad 2.