Final answer:
The number on your driver's license is not compulsory to include on your daily log. An odometer measures the distance traveled, not displacement. A speedometer measures speed, not velocity.
Step-by-step explanation:
In the context of maintaining a daily log for drivers, such as truck or bus drivers, which could be a requirement by transportation regulations, certain information must be recorded. Among the options provided, the number on your driver's license is the element that is not compulsory to include on your daily log. Information typically required in a daily log includes the odometer reading at the start of the day, the location at which your duty status has changed, and the license plate (number plate) of all vehicles driven that day. The driver's license number is personal information that is not typically necessary for a daily log, as the log is meant to record vehicle and trip details, not personal identification beyond what is necessary to identify the driver as a qualified operator.
Regarding an odometer, it measures the distance traveled by a car rather than displacement, since displacement is the straight line distance from starting point to endpoint, while distance is the total length of the journey taken, regardless if you return to the starting point. A speedometer, on the other hand, measures speed, which is a scalar quantity indicating how fast a car is moving, whereas velocity is a vector quantity that also includes direction along with the speed.