Discussion
From my house I went 15 m to the North, then turned West and covered 10 m, then turned South, and covered 5 m. then turned East and covered 10 m. In which direction am I now from my house?
Answer: A
You end up to the North of the house.
Track the north-south and east-west distances separately.
- North-south: 15 m north, then 5 m south, leaves 10 m north.
- East-west: 10 m west, then 10 m east, cancels out.
So the final position is 10 m due north of the house. South would follow only if the southward leg were longer than 15 m. East and West are ruled out because the two horizontal legs are equal and opposite, so there is no east-west offset at all.
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