Distinguish between path length and displacement.

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Path lengthDisplacement
$(1)$ The total distance covered by the moving object is called path length.$(1)$ The shortest distance between the initial and final position is called displacement.
$(2)$ It is always positive.$(2)$ It may be positive,negative,or zero.
$(3)$ It is a scalar quantity.$(3)$ It is a vector quantity.
$(4)$ It can never be zero for any moving object.$(4)$ It can be zero for a moving object if it returns to the starting point.
$(5)$ If motion is not linear,then path length > displacement.$(5)$ If motion is not linear,then displacement < path length.
$(6)$ Final position cannot be determined from path length.$(6)$ Final position can be determined from displacement if the initial position is known.

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