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Bench reference · 254 terms

Words worth knowing

Start with the plain-language meaning, then reach for the technical definition when you need precision.

Showing 1 term

Velocity

Also: linear velocity

Link to term
In plain language

The rate and direction of change of position.

Technical definition

Velocity is a vector derivative expressed in a frame; speed is its magnitude.

Units
metre per second (m/s)
Formula
v = dx/dt

Example A robot moving 0.5 m/s forward has signed components in its body or world frame.

Common misconception Velocity and speed are not identical when direction matters.