A boat is heading `30^(@)` East of north having velocity `20ms^(-1)` with respect to the water which is flowing from West to East with `5ms^(-1)` East

Monjur Alahi

A boat is heading `30^(@)` East of north having velocity `20ms^(-1)` with respect to the water which is flowing from West to East with `5ms^(-1)` Eastern wind (East to West) is blowing with `15ms^(-1)`. The direction of flutter of the flag hoisted on the boat is
A. `60^(@)` West of North
B. `60^(@)` North of West
C. `30^(@)` West of South
D. `30^(@)` South of West


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Salim Ahmed Kawsar

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Direction of futher `=vecV_("wind//boat")` ltbr. `=vecV_("wind")-vecV_("boat")`
`vecV_("wind")-(vecV_("boat//water")+vecV_("water"))`

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