Believe it or not gravity is not really a force, it is an acceleration and on Earth it is about 32 feet/sec2. This same science principle applies in decelerating devices like parachutes and parafoils. The parachute decelerates or slows down the fall of the object.
What is a .DS_Store or ._ AppleDouble file? .DS_Store files are created by OS X to store metadata about folders and files including viewing options, icon positions and color labels. ._ AppleDouble files are created by the OS X when an application adds resource data or metadata to a file on a disk whose format doesn't support resources or metadata.
iPad 2 iCloud Backup failed. iCloud is a remote storage service for Apple devices which is compatible with all its devices having iOS 5 as an operating system. This cloud computing service allows the user to store all the iPad 2 data of up to 5GB in a remote computer servers.