Strangely enough, there are many definitions!
In the Euclidean plane, the distance between any two points is the length of the straight line joining those points. This is the concept of distance most commonly used.
However, day-to-day distances are often measured, not "as the crow flies", but along established roads or routes. Here, the distance between two points is the sum of point-to-point distances of straight line segments. An interesting variation is the metric variously known as Minkovski, Manhattan or Taxicab metric. Here the idea is that the distance between two points is the sum of their North-South separation and their East-West separation. See link for more.
In three dimensional space, such as on the surface of the earth, distance is measured not along a straight line but along the arc of the appropriate great circle (see link for more).
There is a whole branch of mathematics - metric spaces - which is the study of spaces with different metrics (or ways of measuring distance) defined for them.
the distance between two points
The term commonly used to describe this idea is "distance decay." It refers to the decrease in the level of interaction or communication between places as the physical distance between them increases.
Light years
Scientists describe work as the product of a force acting over a distance. It is a way of transferring energy from one system to another. In formal terms, work is defined as the dot product of force and displacement.
To describe velocity, you need to know the speed at which an object is moving and the direction in which it is moving. Velocity is a vector quantity that combines both magnitude (speed) and direction.
a calculated distance..
The term length is used to describe the measured distance from one end to another.
VelocityTime
Line
Alenation
Using light years, which means the distance light travels in a year.
motherboard, computer fan, and chipset
The linear distance between two points.
Time = (distance) divided by (speed) Distance = (speed) multiplied by (time) Speed = (distance) divided by (time)
The term used to describe how far apart two locations are is "distance." Distance can be measured in various units such as kilometers, miles, or meters.
distance from the equator
Line