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Miles per hour (mph or mi/h) is the number of miles covered in one hour. It is the unit for road speeds in the United States and the United Kingdom, and 1 mph is exactly 0.44704 meters per second.
Millimeters per day (mm/day)
Millimeters per day (mm/day) is a unit of speed and this unit is the number of millimeters travelled in one day.
