Final answer:
The cyclist's statement about her average velocity is missing the unit of measurement, such as km/h or m/s, and the direction - both are required to fully define velocity.
Step-by-step explanation:
The cyclist's velocity is missing a unit of measurement. To be complete, a velocity must include both a magnitude and a direction. Since the cyclist mentioned an average velocity of 35, we need to know whether this is in units of kilometers per hour (km/h) or meters per second (m/s), and the direction of travel should also be specified to fully define the velocity.
In physics, velocity is a vector quantity, which means it has both magnitude and direction. This is distinct from speed, which is a scalar and only has magnitude. When solving problems related to motion, it's important to have a clear understanding of these concepts and the units being used.
For example, if the cyclist had said an average velocity of 35 km/h east, that would provide a complete description of her velocity. Without this information, her statement is incomplete, and thus it could relate to many different scenarios in a physics context.