Example: The given terms here are: Distance = 150 km Time = 7200 s Speed =? To express the speed in appropriate units, in this given we can simply kilometer to meter which is the SI unit for distance. Hence, we do the conversion first. </span><span><span> 1. </span>Conversion</span><span> 150 km = m? 1 km = 1000 m 150 km x 1000 m / 1 km = 150, 000 m </span><span><span> 2. </span>To find speed, we drive the formula d = vt where v = velocity or speed to v= d/t</span> <span>V = d / t </span> <span>V = 150, 000m / 7200 s </span> <span>V = 20.83 m/s </span>