A person aiming to reach the exactly opposite point on the bank of a stream is swimming with a speed of $0.5\, m/s$ at an angle of $120^°$ with the direction of flow of water. The speed of water in the stream is..........$m/s$
A person aiming to reach the exactly opposite point on the bank of a stream is swimming with a speed of $0.5\, m/s$ at an angle of $120^°$ with the direction of flow of water. The speed of water in the stream is..........$m/s$
$1$
$0.5$
$0.25$
$0.43$
A person aiming to reach the exactly opposite point on the bank of a stream is swimming with a speed of $0.5\, m/s$ at an angle of $120^°$ with the direction of flow of water. The speed of water in the stream is..........$m/s$
$\sin {30^°} = \frac{{{v_r}}}{{{v_m}}}$$ = \,\frac{1}{2} \Rightarrow {v_r} = \frac{{{v_m}}}{2}$ = $\frac{{0.5}}{2}$ $ = 0.25\,m/s$
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