Parallactic second is the unit of distance because parallactic
second is abreviation of per sec.
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The difference between the final and the initial position of an
object is called displacement. Unit of displacement is metre .
Displacement <= Distance always.
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To get displacement from a displacement graph, just look at the
Y- axis for the particular time (displacement versus time). For the
displacement graph, the Y-axis is usually displacement.
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Two types of displacement reactions are known: - single displacement - double displacement