velocity

/vəˈlɒsəti/
nounIntermediate
technical

The rate of change of position with respect to time, including direction

In physics, velocity is a vector quantity that describes both speed and direction.

This means it accounts for both how fast something is moving and the path it's taking.

💡

In physics, velocity differs from speed because it includes direction.

general

The speed at which something moves, often in a specific context

The car's velocity increased as it accelerated down the highway.

Here, velocity refers to how fast the car is moving in a particular direction.

💡

In everyday language, velocity is often used synonymously with speed.

Collocations

high velocityextremely fast speedterminal velocitymaximum speed reached by a falling objectescape velocityminimum speed needed to escape a gravitational field

Synonyms

Antonyms

Related Phrases

velocity vectorphrase
a mathematical representation of velocity
change in velocityphrase
acceleration

💡Pro Tip

Physics vs. Common Usage

Remember that in physics, velocity includes direction, while speed does not.

Gold Rule

Vector Nature

Velocity is a vector quantity, meaning it has both magnitude and direction.

📖Word Origin

From Latin 'velocitas', meaning 'swiftness' or 'speed'

📝Usage Notes

In physics, velocity is a vector quantity, while speed is a scalar. In common usage, the terms are often interchangeable.

Word Breakdown

velo
swift
root
+
-city
quality of
suffix
English Dictionary