Medusa's Vector Magic is an example of this power.
Summary
Vector Manipulation is a subtype of applied Mathematics Manipulation. It is the power to manipulate the properties of objects described via vectors by modifying these vectors directly. A vector contains information about the magnitude and direction of things. As such the most usual applications of the power deal with the manipulation of the direction and velocity of the movement of various different things. Those could be physical objects or also energy like light, gravity, electricity or the spreading of heat. Not just the velocity, but also the amount of power those things have could be controlled using this ability. Many more applications are imaginable.