Question
Asked Sep 27, 2019
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Suppose a chinook salmon needs to jump a waterfall that is 1.39 m high.
(a) If the fish starts from a distance 1.18 m from the base of the ledge over which the waterfall flows, find the x- and y-components of the initial velocity the salmon would need to just reach the ledge at the top of its trajectory.

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Expert Answer

Step 1

Write the kinematic equation , to initial velocity of the fish along vertical direction .

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at the top of the trajectory, the vertical velocity is zero, and the acceleration is due to acceleration due to gravity. 0 -2gs 2 gs, и, = 2(9.8m/s')(1.39m) 5.21m/s

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Step 2

Write the kinematic equatio...

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У 0 gt и, t = g 5.21m/s 9.81m/s2 = =0.531s

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Kinematics

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