A flying squid $($family Ommastrephidae$)$ is able to "jump" off the surface of the sea by taking water into its body cavity and then ejecting the water vertically downward. A $0\mathrm{.}76-$kg squid is able to eject $0\mathrm{.}28$ kg of water with a speed of $20$ m$/$s$.$

$($a$)$ What will be the speed of the squid immediately after ejecting the water?

m$/$s

$($b$)$ How high in the air will the squid rise?