Explain the value or importance of using the international system of units when describing motion. provide an example that supports your reasoning

In system international (SI) or metric units, motion involves the units meters and seconds. The consistency of units used makes the information described by one individual in a country understandable by someone else in a different country who does not even speak the same language. 
For example, if someone describe the speed of an object to be 50 meters per second, anyone using the same units can understand this. Meanwhile, use of units such as foot per second is limited to a small number of countries.