Cortana is an intelligent personal assistant created by Microsoft for Windows Phone 8.1 and Windows 10 (where it now supersedes Bing Mobile), Microsoft Band, Windows 10, and coming to iOS, Android, and the Xbox One.
a force which is the result of two or more forces acting conjointly, or a motion which is the result of two or more motions combined. See Composition of forces, under Composition.
An upward force is any force that counteracts the force of gravity. Buoyancy is an example of an upward force because it pushes an object away from the Earth's center of... An upward force is any force that counteracts the force of gravity. Buoyancy is an example of an upward force because it pushes an object away from the Earth's center of mass. Keep Learning.