Question

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?(1 point) Responses They have the same velocity. They have the same velocity. They each have a displacement of 0 miles. They each have a displacement of 0 miles. They each travel a distance of 0 miles. 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 start point to the endpoint. Since both workers start and end at the post office, their displacement is 0 miles regardless of the distance they travel on their routes.

The other options are not necessarily true:

• They do not have to have the same velocity, as their speeds and directions may differ even if their starting and ending points are the same.
• They do not travel a distance of 0 miles; they travel some distance while delivering mail before returning to the post office.
• They do not necessarily travel the same distance because their delivery routes could be different.