A boat is crossing a river in which the water is moving at a speed of $4.0 ms^{–1}$ from left to right.
In still water, the speed of the boat is $6.0 m s^{–1}$. The boat is directed at an angle $\theta$ to a line perpendicular to the river banks. The resultant velocity $v$ of the boat is in a direction perpendicular to the river banks.
What are the values of $\theta$ and $v$?
A
2 )
B
3 )
C
4 )
D
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