4. A man walks 30 m. towards north, then 20 m towards east
and in the last 30/2 m. towards south west. The dis-
placement from origin is
(1) 10 m towards west
(2) 10 m towards east
(3) 60,2 m towards north west
(4) 60/2 m towards north north
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Answer:
A person moves 30 m North then 20 m east than 30 root 2 meter southwest. In triangle XZO, OZ is resultant from origin. Hence, The position of person from origin is 10 m west.
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