Physics

Salmon often jump waterfalls to reach their breeding grounds. Starting 2.00 m from a waterfall 0.55 m in height, at what minimum speed must a salmon jumping at an angle of 32.0 degrees leave the water to continue up stream?

help plz...stuck....thx

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  1. We have a parabola, with
    y(0) = 0
    y(2.0) = 0.55 is the vertex

    That means its equation is y = 0.1375(4-(x-2)^2)

    The slope at x=0 is 0.55
    sin 32° = 0.53

    So, the given data are not exact, but probably close enough. So, using 32° as our benchmark, with tan32° = 0.625, we need v such that

    (v sin32°)^2/2g = 0.55
    .281v^2/19.6 = 0.55
    v = 6.19 m/s

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  2. Wth is a "help plz...stuck....thx"?

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  3. hey man, im stuck too bud, BRO, like wth

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  4. I'm literally crying rn :(

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  5. Salmon tend to swim in fresh water rivers, so I would advise googling the average speed of a river.

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  6. Steve you don’t show how you found v you just give us it with no context please explain

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