m/s is a unit of speed.
Speed is defined as the rate of change of distance with time. Speed is one of the basic parameter for motion. It is a scalar quantity with only magnitude, not direction. It was first discovered by Galileo.
SI unit of speed
We know that speed is given by the formula
Thus we can say that speed can be measured with the SI unit of length (meters) over the SI unit of time (seconds).
Hence SI unit of speed is
SI unit of speed = ms-1