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A man walks 40m North then the 70 m east and then 40 m south what is his displacement from the starting point?

A man walks 40m North then the 70 m east and then 40 m south what is his displacement from the starting point? 
 
 

Grade:11

2 Answers

Arun
25750 Points
4 years ago
30 metres will be the answer as he goes 40m up and 40m down afterwards that means he will be on the same line as starting point and he moved 30m east so the answer comes out to be 30m.
Khimraj
3007 Points
4 years ago
The answer is 70m west, you see the thing is the man walks 40m north from his start point and then proceeds 70m east and then 40m south. Try to imagine this or even better you could visualise the situation by drawing a diagram, the three vectors for displacement form an incomplete rectangle which is completed by adding the 70 west vector which becomes your final displacement.

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