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AP Physics C: E&M
In physics, radius vector (r) refers to a vector that represents both magnitude and direction from an origin point to another point in space.
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Displacement Vector: A displacement vector represents the change in position of an object from its initial position to its final position.
Position Vector: A position vector specifies the location of a point relative to an origin point.
Velocity Vector: A velocity vector describes both speed and direction of motion for an object.