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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 travel the same distance.
They travel the same distance.
They each travel a distance of 0 miles.
They each travel a distance of 0 miles.
They each have a displacement of 0 miles.
1 answer
The correct answer is:
They each have a displacement of 0 miles.
Displacement is defined as the change in position from the starting point to the final position. Since both postal delivery workers start and end at the post office, their overall displacement is 0 miles, even if the distances they traveled while delivering mail are different. The other options regarding the same velocity and traveling the same distance are not necessarily true.
