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# SI unit for velocity?

## Answer

###### Wiki User

###### June 04, 2010 2:48PM

m/s

## Related Questions

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### What is the SI unit for velocity?

Meter per second
There is no standard SI unit for velocity actually. It is a derived
unit.
Velocity is distance traveled per time together with the
direction of motion. The SI unit of distance is the meter (m) and
the SI unit of time is the second (s).
So the units of velocity in SI units is meters/second (m/s), or
ms-1
See the Related Questions link to the left "What are all the SI
units" for more information about SI units.
Comment
Derived units are SI units.

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### Why the time twice in unit acceleration?

An acceleration is not a velocity - it is the rate of change of
velocity.
In SI units, the units of velocity are meters/second.
Acceleration is the rate of change of velocity, per unit time -
how fast the velocity changes. Therefore, its units are velocity /
time. In SI units, this gives you (meters/second) / second, usually
written as meters/second2.