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A person goes 10 km north and 20 km east...

A person goes `10 km` north and `20 km` east. What will be displacement from initial point ?

A

22.36 km

B

2 km

C

5 km

D

20 km

Text Solution

Verified by Experts

The correct Answer is:
A

`vec(AC)=vec(AB)+vec(BC)`
`AC=sqrt((AB)^(2)+(BC)^(2))`
`=sqrt((10)^(2)+(20)^(2))`
`=sqrt(100+400)=sqrt(500)=22.36km`
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