Question 16
MediumOriginal questionKavya walks 10 km east from a petrol pump, turns left and walks 3 km, then turns left and walks 10 km. How far, and in which direction, must she now walk to reach the petrol pump by the shortest path?
Show the answer and explanation
CorrectNot quiteAnswer B
Correct answer: B
Explanation
Left from east is north; left from north is west.
10 km east and 10 km west cancel, so she is 3 km north of the pump.
To get back she walks 3 km south.
Worth noting
3 km north is where she is, seen from the pump. The question asks which way she must walk to get back.
- Concept
- Return direction is the reverse of the displacement
- Typical timeTypical
- 70 s
- Your timeYours
- —
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Ten questions from Direction Sense, at your own pace.