Depth of flow $()$ in various cross$-$sections, $$

Depth mm

$100$

$15$

$10$

$40$

Equation:

$$

$$

$=1$

$2[1+8$

$21]$

$=$

$$

Tasks:

$1.$ Explain how hydraulic jumps are formed

$2.$ Calculate the velocities and Froude numbers before and after the jump $($Hint: apply $=).$