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Question: 020 100 points a bird is flying with a speed...

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020 10.0 points A bird is flying with a speed of 14.7 m/s over water when it accidentally drops a 1.60 kg fish The acceleration of gravity is 9.81 m/s4 If the altitude of the bird is 6.40 m and air resistance is disregarded, what is the speed of the fish when it hits tho water Answer in units of m/s 021 (part 1 of 3) 10.0 points A pulley system lifts a 1493 N weight a dis- tance of 0.903 m. Paul pulls the rope a dis- tance of 5.2 m, exerting a force of 386 N What is the ideal mechanical advantage of the system? The acceleration due to gravity is 9.8 m/s2 022 (part 2 of 3) 10.0 points What is the mechanical advantage? 023 (part 3 of 3) 10.0 point:s How efficient is this system? Answer in units of %
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