Definition of Imagery Imagery means to use figurative language to represent objects, actions, and ideas in such a way that it appeals to our physical senses. Usually it is thought that imagery makes use of particular words that create visual representation of ideas in our minds.
A velocity vector is an arrow that shows direction and speed of motion of a GPS site. The velocity vector for each site shown in Figure 2 is calculated from data like those shown in Figure 1. A vector is a mathematical construct that has a magnitude and a direction.
Velocity is a vector quantity, which means it has both a magnitude, called speed, and a direction. If I were in my car traveling 30 miles per hour to the north, the magnitude of my velocity, or speed, would be 30 miles per hour, and my direction would be north.