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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 the displacement from initial point?

A

`22:36km`

B

`22.46 km`

C

`25.23 km`

D

`20.36 km`

Text Solution

Verified by Experts

The correct Answer is:
A
(a): From triangle law of vector

`vecR=veca+vecb`
`vecR=10hatj+20i`
`R=sqrt(100+400)=sqrt500`
`=10sqrt5km`
`=22.36km`
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