Consider the same rectangular structure of width $b=5m$ and height $15m$ in a channel of $25$

$m$ width, where the discharge $Q$ through the channel is $250m^3{s}^{-1}.$

Assuming the height $h$ of water is $5m,$ what is the flow velocity $U$ at the sides of the

structure? This is where the channel width has been reduced due to the blockage of the

structure $($that is$,$ the width $b$ of the structure$).$ Assume the structure is in the centre of the

channel, leaving an equal width of channel either side of the structure, thus the velocity of

the flow on either side of the structure will be the same.

Give your answer rounded to $2$ decimal places $($you do not need to input units, only the

numerical answer$).$