To displace an object is to translate it. The change in its
position is called its displacement. This is a vector quantity.
for example, the displacement of a helicopter on a rescue
mission from its heliport to a ship at sea. Its displacement
can be given as 12 km east and 5 km north, which can be represented
by the vector (12 / 5) or as 13 km on a bearing of 067.40