Question

what is the displacement if a person traveled from point B to E?

What is the displacement if a person traveled from point D to point E and back to point D?​

Answer 1

Answers:

1. displacement = 3 km
2. displacement = 0 km

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Explanation:

Problem 1

Focus on the y axis which is the distance axis.

Point B has a y coordinate of 2

Point E has a y coordinate of 5

The displacement is 5-2 = 3, which means the person has moved 3 km.

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Problem 2

Both D and E have the same y coordinate. So the displacement is 0 (since 5-5 = 0). No change in distance has occurred. During segment DE, the person is resting. By the way it is impossible to go back to D since it's impossible to go back in time.