Concept explainers
A jogger runs due east along a straight jogging trail that is 2 km long. When she reaches the end of the path, she turns around and runs back to the west toward her initial starting point. In which direction does her displacement point after she has run a total distance of 3 km?
The direction in which the displacement of the jogger point after she run a total distance of
Answer to Problem 1CQ
The displacement of the jogger point towards east after she run a total distance of
Explanation of Solution
Given that the jogger runs up to the end of the straight trail which is towards east and of distance
The displacement is the vector from the starting point of the journey to the end point. Hence, the displacement vector in this situation points from the initial position to the midpoint of the trail. That is, the displacement of the jogger point towards the east direction.
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