AP Physics 1 Question 419: Answer and Explanation
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7. Question below refers to the following scenario:
An explorer travels 30 m east, then 20 m in a direction 45° south of east, and then 140 m north.
What is the displacement of the explorer?
- A. 130 m
- B. 169 m
- C. 170 m
- D. 215 m
Correct Answer: A
The displacement is equal to the change in position of the explorer. The horizontal and vertical components of the explorer's displacement can be calculated as follows:
The displacement of the explorer then is the magnitude of the vector :