Yards per hour (yd/h)
Yards per hour (yd/h) is a unit of speed and this unit is the number of yards travelled in one hour.
Miles per hour (mph, mi/h)
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.