Question

select the correct answer.
this image shows a student moving from the
entrance to the science lab.
what does the arrow represent?
the arrow represents the
displacement of the student.
the arrow represents the
initial and final time instants
of the movement.
the arrow represents the time
interval of the movement.
the arrow represents the
origin of the movement.

Explanation:

Displacement is a vector quantity that refers to the change in position of an object. It has both magnitude and direction. In the context of the student moving from the Entrance to the Science Lab, the arrow shows the straight - line path from the initial position (Entrance) to the final position (Science Lab), which is the definition of displacement. The initial and final time instants (\(t = 0s\) and \(t=10s\)) are marked separately on the top of the diagram, not by the arrow. The time interval (\(\Delta t=t_{final}-t_{initial}=10 - 0=10s\)) is a scalar quantity (just a value, no direction associated with the arrow's direction in terms of time). The origin (\(x = 0m\)) is a reference point on the position - axis, not represented by the arrow which connects two non - origin positions (\(x=- 15m\) for Science Lab and \(x = 0m\) for Entrance).

Answer:

The arrow represents the displacement of the student.