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algol [13]
3 years ago
9

PLEASE HELP!! Salmon often jump waterfalls to reach their

Physics
1 answer:
AlexFokin [52]3 years ago
8 0

Answer:

7.13781 m/s

Explanation:

X-direction             | Y-direction

x=v_{xo}t+\frac{1}{2}a_{x}t^2      | y=v_{yo}t+\frac{1}{2}a_{y}t^2

3.41=v_{o}cos(28.4)t  | 0.397=v_{yo}sin(28.4)t+\frac{1}{2} (-9.81)t^2

3.41=v_{o}(0.87964)t  | 0.397=v_{yo}sin(28.4)(\frac{3.87658}{v_{o} })+\frac{1}{2} (-9.81)(\frac{3.87658}{v_{o} })^2

\frac{3.41}{0.87964}=v_{o}t             | 0.397=1.84379-\frac{73.71171}{v^2}

\frac{3.87658}{v_{o} } =t                | 7.13781=v

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