A person moves 20m north and then 20m towards east and finally 30^1/2 m west direction find the displacement of the person from origen
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kumarmangalam:
brother the distence is 30^1/2 that is the square root of 30.........not 30 and half.....
sry mangal I didn't watch that
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we know that displacement is a shortest distence between final point to initial point.
DC=30^1/2m
BC=20 m
so ....BD=DC-BC
=(30^1/2-20) m
now in trangle ABD
AD^2=AB^2+BD^2
=20^2+(30^1/2-20)^2
=400+30+400-40×30^1/2
=830-40×30^1/2
AD^2=830-40×5.67
=830-226.8
=603.2
AD=ROOT 603.2
AD=24.56 m
hence the displacement is 24.56m approx.......
DC=30^1/2m
BC=20 m
so ....BD=DC-BC
=(30^1/2-20) m
now in trangle ABD
AD^2=AB^2+BD^2
=20^2+(30^1/2-20)^2
=400+30+400-40×30^1/2
=830-40×30^1/2
AD^2=830-40×5.67
=830-226.8
=603.2
AD=ROOT 603.2
AD=24.56 m
hence the displacement is 24.56m approx.......
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please mark as brenlist answer. ...
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