Thursday, 31 July 2014

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WHAT IS DISTANCE

Distance, or farness, is a numerical description of how far apart objects are. In physics or everyday usage, distance may refer to a physical length, or an estimation based on other criteria (e.g. "two counties over"). In mathematics, a distance function or metric is a generalization of the concept of physical distance. A metric is a function that behaves according to a specific set of rules, and is a concrete way of describing what it means for elements of some space to be "close to" or "far away from" each other. In most cases, "distance from A to B" is interchangeable with "distance between B and A".

Distance is a scalar quantity . It has only magnitude not direction . Distance is a very fundamental  unit .
Example of distance - distance between hodal and delhi is 90 km ,distance of faridabad from hodal is70 km , etc
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