Final answer:
Displacement is the vector quantity representing the change in position of an object and is true as described. It differs from distance, which is a scalar and does not include direction.
Step-by-step explanation:
The statement 'Displacement is the movement of a point with respect to some convenient reference system' is true. Displacement refers to the change in position of an object and is a vector quantity, which means it has both magnitude and direction. It is important to note that displacement is different from distance in that distance is a scalar and only describes the length of a path taken by an object, without considering its direction.
For clarity, if an object moves from point A to point B, the displacement is the straight line (and direction) from A to B, while the distance would be the total length of the path the object followed to reach point B. Therefore, displacement is not always equal to the distance moved, because displacement is the shortest path between two points in a given direction, whereas distance covers the entire trajectory.