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A boat with a speed of 5 km *h^(-1) in s...

A boat with a speed of `5 km *h^(-1)` in still water crosses a river of width 1 km along the shortest possible path in 15 minutes. What is the velocity of the river water ?

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The correct Answer is:
`3 km *h^(-1)`
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CHHAYA PUBLICATION-VECTOR-PROBLEM SET-I
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  10. For what values of a and b , will the vectors 2hati-3hatj-hatk and ah...

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  11. For what value of a ,will the vectors ahati-2hatj+hatk and 2ahati+ah...

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  12. Prove that (vecA+2vecB)*(2vecA-3vecB)=2A^2+ABcostheta -6B^2

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  15. Find the unit vector perpendicular to both the vectors vecA=(2hati+2ha...

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  18. A stone is thrown from the ground with a velocity of 14 m *s^(-1) ...

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