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## Homework Statement

starting at 2.00m away from a waterfall .55m in height, at what minimum speed must a salmon jumping at an angle of 32.0° leave the water to continue upstream?

## Homework Equations

Δx=v

_{i}(cosθ)Δt

Δy=v

_{i}(sinθ)Δt-1/2g(Δt)

^{2}

## The Attempt at a Solution

there were some other equations in the book, but i just can't make the connection, i know i can find v

_{x,i}and v

_{y,i}if i had v

_{i}but i don't know any velocities. i tried using cos32°=(2.0m/h) but i can't get any further, so little help would be appreciated. also i am new.