Final answer:
Velocity does have units of m/s but is not a base unit; it is a vector that includes both magnitude and direction. SI units for velocity are derived by dividing distance by time, such as m/s, and instantaneous velocity represents the specific velocity at any given instant.
Step-by-step explanation:
The statement 'Velocity has units of m/s. Velocity is a base unit.' contains both a true and a false claim. It is true that velocity has units of meters per second (m/s), but it is false to say that velocity is a base unit. In scientific terms, velocity is a vector quantity that indicates both the speed and direction of an object. The SI unit for velocity is indeed m/s, which is derived by dividing a distance by time, such as when an object travels one meter in one second.
Instantaneous velocity is the velocity at a specific instant or the average velocity over an infinitesimal time interval. Units for velocity can vary and include kilometers per hour (km/h), miles per hour (mph), and centimeters per second (cm/s), depending on the context.