Question

A ..... is such that it can slide along its line of action.

vector
null vector
motion
line vector

Answer 1

A vector is an infinite set of parallel directed line segments. Vectors defined this way are called free vectors. A null vector has a zero magnitude. In geometry motion is a distance-preserving map of a space (for example, rotation, reflection, translation). A direction vector that describes a line segment D is any vector with two distinct points A and B on the line D.