Q.

A man has to go 50 m due north, 40 m due east and 20 m due south to reach a field, the distance he has to walk to reach the field and the magnitude of displacement from his house to the field respectively are

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a

110m, 50m

b

75m, 110m

c

90m, 75m

d

50m, 110m

answer is B.

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Detailed Solution

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Distance=AC+CD+DE=50+40+20=110m

Displacement(AE)=(40)2+(30)2=50m

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A man has to go 50 m due north, 40 m due east and 20 m due south to reach a field, the distance he has to walk to reach the field and the magnitude of displacement from his house to the field respectively are