class 11 physics vector addition and subtraction. A person goes 10km north and 20km east. what will be displacement from initial point
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By vector addition....
R =√(10^2+20^2+2(10)(20)cos90°)
or
R=√(100+400)km
R=√500km
R=10√5km
R =√(10^2+20^2+2(10)(20)cos90°)
or
R=√(100+400)km
R=√500km
R=10√5km
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Displacement will be 22.36km from initial point.
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