The triangular channel has the dimension shown below. The channel slope $(S_o)$ is $0\mathrm{.}01$ and a Manning roughness $n$ is $0\mathrm{.}020.$ The flow rate in the channel is $25\mathrm{.}0\frac{m^3}{s}.$

$A=y^2$

$P=2\sqrt[\phantom{2}]{2}*y$

$R=\frac{y}{2\sqrt[\phantom{2}]{2}}$

$T=2y$

If the actual water depth is $2\mathrm{.}5m,$ then determine:

a$)$ The Froude number $F_r$

b$)$ The specific energy $E($in m$)$

c$)$ The friction slope $S_f$