To scroll, you swipe up and down on the screen. Works both on the list and the contact (provided it's long enough to need scrolling).
You can delete contacts on the iPad. Just tap the Edit button below the contact, swipe to scroll to the bottom and choose the big red delete button at the very bottom.
Hey! I just noticed that when you scroll to the bottom of a contact (in non-edit mode) you have three buttons: FaceTime, Share Contact, Add to Favorites. When did those show up?
Ok, obviously FaceTime showed up with the iPad 2, but I hadn't noticed the others either.