A man walks 30 m north, then 20 m east, then 15 m south. How far is he from his starting point (in m)?
Answer and explanation
Correct answer: D. 25
- Step 1: Calculate the net displacements along the orthogonal cardinal axes: along North-South, (North); along East-West, (East).
- Step 2: By the Pythagorean theorem, straight-line distance is .
- Step 3: Evaluate the square root: .
Answer
25.
Practise more Direction sense.
Free questions with an explanation for every one, and full timed GATE mock tests.
More Direction sense questions
- A man walks 15 m north, then 12 m east, then 6 m south. How far is he from his starting point (in m)?
- A man walks 15 m north, then 12 m east, then 6 m south. In which direction is he from his starting point?
- A man walks 30 m north, then 20 m east, then 15 m south. In which direction is he from his starting point?
- A man walks 36 m north, then 72 m east, then 6 m south. How far is he from his starting point (in m)?
- A man walks 36 m north, then 72 m east, then 6 m south. In which direction is he from his starting point?
- A man walks 24 m north, then 24 m east, then 6 m south. How far is he from his starting point (in m)?