Why distance is called magnitude of displacement? Unit of displacement

1.	Why distance is called magnitude of displacement? Unit of displacement is s or ∆s?
Answer» \'Magnitude of displacement\' is a technical way of saying \'distance, as measured directly between the start point and the end point\'. As it includes no directional information it is a \'scalar\' quantity rather than a \'vector\'. Example, imagine two friends live on opposite sides of a lake.\xa0This makes\xa0displacement\xa0a vector quantity because it incorporates both movement, magnitude and direction. In the shorthand of physics,\xa0displacement\xa0is written as Δs. \'Delta\' is a Greek letter shaped like a triangle and it\'s\xa0used\xa0to represent \'change in. \' The \'s\' stands for spatial location.

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