After being struck by lightning, Barry Allen wakes up from his coma to discover he's been given the power of super speed, becoming the Flash, fighting crime in Central City. Greg Berlanti, Geoff Johns, Andrew Kreisberg.
vector sum, resultant-a vector that is the sum of two or more other vectors. radius vector-a line connecting a point in space to the origin of a polar coordinate system. radius vector-a line connecting a satellite to the center of the body around which it is rotating.
A vector is what is needed to carry the point A to the point B; the Latin word vector means carrier. It was first used by 18th century astronomers investigating planet rotation around the Sun. The magnitude of the vector is the distance between the two points and the direction refers to the direction of displacement from A to B.