Mathematics for IGCSE & O level - Vectors (Section 5 - No. 35)
Which of the following statements correctly defines a unit vector?
A vector of length 0.
A vector with a magnitude of 1 and a defined direction.
A vector with a magnitude greater than 1.
A vector that is parallel to the y-axis.
解释
A unit vector has a magnitude of 1 and a defined direction.