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Ira Lisetskai [31]

3 years ago

9

there is a fish called an archer fish that shoots drops of water at insects resting on branches above the water. If the Archer f

ish is aiming at an insect with (x,y) coordinates of (0.5,0.25) and spits water at an angle of 40 degress relative to the surface of the water. At what speed v should an archerfish spit the water to shoot down a floating insect located at that distance?

1 answer:

Mariulka [41]3 years ago

4 0

Answer:

=3.5 m/s

Explanation:

y = x tanθ - 1/2 g x² / (u²cos²θ )

y = 0.25 , x = 0.5, θ = 40°

.25 = .50 tan40 - .5 x 9.8x x²/ u²cos²40

.25 = .42 - 2.0875/u²

u = 3.5 m / s.

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