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.
Apple provides you with 5GB of free iCloud storage when you register an Apple ID, which isnât much considering how expansive the service has become. It can back up your devices, keep your photos and videos in the cloud, and even operate like a standard cloud storage service in the form of iCloud Drive.