A unit vector is a vector with a magnitude of 1. It is often used to represent the direction of a vector. To find the unit vector of a vector, we simply divide the vector by its magnitude.
Unit vectors are important in many applications, such as physics and engineering. In physics, unit vectors are used to represent the direction of forces, velocities, and accelerations. In engineering, unit vectors are used to represent the direction of forces, moments, and stresses.