A person travelled a distance of 3 km along a straight line in the North direction .Then he travelled 2 km in west direction and then 5 km in south direction.The magnitude of the displace-ment of this person would be ___________.

2 \sqrt{2}

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3 \sqrt{2}

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4 \sqrt{2}

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10 Km

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Solution

The correct option is A $2 \sqrt{2}$ Km
IA person walked 3 km in north, 2km west and 5 km in South. Then, the map becomes like:
Then now we have .
P=5–3=2km b=2km
So H^2=P^2+B^2,
H^2= 4+4
H^2=8
Or H=√8
The displacement travelled by person is 2√2 km or 2.82km

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A person travelled a distance of 3 km along a straight line in the North direction .Then he travelled 2 km in west direction and then 5 km in south direction.The magnitude of the displace-ment of this person would be ___________.

The correct option is A 2√2 KmIA person walked 3 km in north, 2km west and 5 km in South. Then, the map becomes like:Then now we have .P=5–3=2km b=2kmSo H^2=P^2+B^2,H^2= 4+4H^2=8Or H=√8The displacement travelled by person is 2√2 km or 2.82km

The correct option is A $2 \sqrt{2}$ Km
IA person walked 3 km in north, 2km west and 5 km in South. Then, the map becomes like:
Then now we have .
P=5–3=2km b=2km
So H^2=P^2+B^2,
H^2= 4+4
H^2=8
Or H=√8
The displacement travelled by person is 2√2 km or 2.82km