Displacement is zero when you start and end at the same spot. As we saw in the examples, the distance and displacement covered in different paths are rarely exact because the distance is a scalar quantity and displacement is a vector quantity.
When can displacement be equal to zero?
When the final position and initial position of the object is same then displacement is said to be zero for example an object/body moving in a circular motion when reaches the starting point after completing one complete cirecle is said to have zero displacement.
Can displacement ever be zero?
Displacement can be zero even when distance is not zero. ... Distance = 10 +10 = 20 m. Displacement = Minimum distance between final(B) and initial position(B) = 0.