AP physics
Suppose a Chinook salmon needs to jump a waterfall that is 1.50 m high. If the fish starts from a distance 1.00 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. Can the fish make this jump? (Remember that a Chinook salmon can jump out of the water with a speed of 6.26 m/s.)
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Answers
The x-component of the initial velocity the salmon would need to just reach the ledge at the top of its trajectory is 6.26 m/s. The y-component of the initial velocity the salmon would need to just reach the ledge at the top of its trajectory is 5.91 m/s. Using the equation vf2 = v0^2 + 2ad, we can calculate the final velocity of the Chinook salmon. The equation is as follows: vf2 = 62.64 + 2(9.8)(1.50) This results in a final velocity of 14.92 m/s. Since this is equal to or less than the initial velocity of the Chinook salmon (6.26 m/s), the fish can make the jump.
