Vectors in the Plane
Quick Review
Quick Review Solutions
What you’ll learn about How to represent vectors as directed line segments How to perform basic Vector Operations How to write vectors as linear combinations of Unit Vectors How to find the Direction Angles of vectors How to use vectors to model and solve real-life problems … and why These topics are important in many real-world applications, such as calculating the effect of the wind on an airplane’s path.
Directed Line Segment
Two-Dimensional Vector
Initial Point(R), Terminal Point(S), Equivalent(P)
Magnitude
Example Finding Magnitude of a Vector
Vector Addition and Scalar Multiplication
Example Performing Vector Operations
Unit Vectors
Example Finding a Unit Vector
Standard Unit Vectors
Resolving the Vector
Example Finding the Components of a Vector
Example Finding the Direction Angle of a Vector
Velocity and Speed The velocity of a moving object is a vector because velocity has both magnitude and direction. The magnitude of velocity is speed.