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A boat stems in a river with velocity 2...

A boat stems in a river with velocity ` 2hati + hatj` with respecitve to the ground. The river water flows with a velocity ` -3hati - 4hatj` with respect to the ground. What is the relative velocity of boat w.r.t river water ?

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The correct Answer is:
`5hati+9hatj`
`barv_(aw)=barv_(B)-barv_(w)`
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