It results from the interaction of several forces in the atmosphere. It can be considered as a continuous stream of air composed of discrete air parcel. The force exerted on an object equals its mass times the acceleration produced. When the mass of an object is constant, the force acting on the object is directly related to the acceleration produced.
Wind is a vector quantity, that is, has both direction and magnitude.
Hence, an acceleration in wind may consists of a change in speed or direction or both. It arises from spatial variations in air temperature and, to a lesser extent, water vapor concentration. The greater the pressure difference, the stronger the pressure gradient, hence the stronger the pressure gradient force. Pressure gradient force is responsible for triggering the initial movement of air, which in turn leads to the development of wind. It is directed from higher to lower pressure at right angles to the equal pressure surfaces, isobars .