Two postal delivery workers have different routes. They both travel from the post office, to neighborhoods to deliver mail, and then back to the post office. Which statement must be true about the two postal delivery workers?

Question

(1 point)
• They each have a displacement of 0 miles.
• They have the same velocity.
• They each travel a distance of 0 miles.
• They travel the same distance.

Answer 1

The statement that must be true about the two postal delivery workers is:

• They each have a displacement of 0 miles.

Displacement is defined as the change in position from the starting point to the ending point. Since both postal delivery workers start and end their routes at the post office, their displacement is 0 miles, regardless of the distance they each traveled along their routes.

The other statements are not necessarily true. They may have different velocities and travel different distances.