A policeman goes 20 meters towards South and then turns to his right and walks…
2023
A policeman goes 20 meters towards South and then turns to his right and walks 40 meters. He again turns to his left and walks 10 meters. How far is he now from his starting point?
- A.
37.5 meters
- B.
50 meters
- C.
30 √2 meters
- D.
40 meters
Attempted by 1 students.
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Correct answer: B
The policeman moves 20 meters South, then turns right to face West and walks 40 meters. Turning left from West points him South again for another 10 meters, resulting in a total displacement of 30 meters South and 40 meters West. Using the Pythagorean theorem, the distance from the start is sqrt(30^2 + 40^2), which equals 50 meters.