Your answer is partially correct. I got $881\mathrm{.}4$ as the answer but it is not correct.

Flying Circus of Physics

Until he was in his seventies, Henri LaMothe excited audiences by belly$-$flopping from a height of $11$ m into $33$ cm of water $($see the figure$).$ Assuming that he stops just as he reaches the bottom of the water, and taking his mass to be $60$ kg $,$ find the magnitude of the impulse on him from the water.