In the discussion of the RigidBody component, it says that "[t]hey do have a velocity but only move when we move their Transform component, usually via a Script. "
However, I inadvertently made my Player Kinematic, and it still worked with velocity. This might be a change since the book was written (always an occupational hazard, trying to keep up with Unity!) -- https://answers.unity.com/questions/866484/move-a-rigidbody-when-kinematic.html
In the discussion of the RigidBody component, it says that "[t]hey do have a velocity but only move when we move their Transform component, usually via a Script. " However, I inadvertently made my Player Kinematic, and it still worked with velocity. This might be a change since the book was written (always an occupational hazard, trying to keep up with Unity!) -- https://answers.unity.com/questions/866484/move-a-rigidbody-when-kinematic.html