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Mature salmon swim upstream, returning to spawn at their birthplace. During the arduous trip they leap vertically upward over waterfalls as high as 2.87 m. With what minimum speed (in m/s) must a salmon launch itself into the air to clear a 2.87-m waterfall?

Respuesta :

Answer:

The minimum speed is 7.5 m/s.

Explanation:

Given that,

Height = 2.87 m

We need to calculate the minimum speed

Using equation of motion

[tex]v^2=u^2-2gh[/tex]

[tex]u=\sqrt{2gh}[/tex]

Where, u = minimum velocity

g = acceleration due to gravity

h = height

Put the value into the formula

[tex]u=\sqrt{2\times9.8\times2.87}[/tex]

[tex]u=7.5\ m/s[/tex]

Hence, The minimum speed is 7.5 m/s.

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