Question

a boy moves 10m 30°N of E,10m due south and then 10m 30°N of W.find the magnitude of displacement of the boy


pls answer with solution


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Answer 1

Answer:

ণুএযডচছ্য থেফরডছ্য। ছডৈডরয দ্রব্য। লর্ড

Answer 2

Answer:

Displacement = 0

Explanation:

a boy moves 10m 30 degree N OF E, 10 M DUE SOUTH AND THEN 10M 30 N OF W FIND THE DISPLACEMENT

Let say He is at origin (0,0)

moves 10m 30 degree N OF E,

=> 10Cos30 = 5√3 m Towards East

& 10Sin30 = 5 m Towards North

he is (5 m N & 5√3 m E)

Then 10 m south = -10 m North

=> he is (5 -10) m N & 5√3 m E

=> - 5 m N & 5√3 m E

=> 5 m S & 5√3 m E

Then 10M 30 N OF W

=> 10 Sin30 = 5 m North & 10Cos30 = 5√3 m West

=> - 5 m S & - 5√3 m E

he is at (5 - 5) S & (5√3 - - 5√3 ) E

=> 0 m S & 0 m E

=> He is back to origin

=> Displacement = 0

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