To different individuals, it may or may not have any significance. The quantity is
typically referred to as "speed", and you're free to decide for yourself whether it
has any relevance in your life.
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The rate of change of position is the velocity. The velocity at a specific point in time is called the instantaneous velocity.
Velocity = distance divided by time / Velocity = average speed over time / Acceleration = (change of) velocity divided by time elapsed Change in velocity = final velocity "minus" initial velocity divided by time elapsed
Change in velocity divided by time is acceleration, but velocity divided by time has no particular significance.
speed, time, distance
Acceleration is an increase in change in speed over time of an object, and deceleration is a decrease in the change in speed over time of an object. -aerol-