Millimeters per second (mm/s)
Millimeters per second (mm/s) is a unit of speed. One meter is equivalent to 1000 millimeters and this unit is the number of millimeters travelled in one second.
Kilometers per hour (kph, km/h)
Kilometers per hour (kph or km/h) is a unit of speed. Kph is a unit commonly used to express the speed of vehicles, such as cars and trains.