With what velocity should the water stream be launched


The small archerfish (having length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This rightly named creature captures its prey by shooting a stream of water drops at an insect, either flying or at rest. The bug falls to the water and the fish gobbles it up. The archerfish consists of high accuracy at distances of 1.2 m to 1.5 m, and it at times makes strikes at distances up to 3.5 m. A groove in the roof of its mouth, all along with a curled tongue, forms a tube which enables the fish to pass on high velocity to the water in its mouth if it suddenly closes its gill flaps. Assume that the archerfish shoots at a target which is 1.55 m away, measured all along a line at an angle of 30.0° above the horizontal. With what velocity should the water stream be launched if it is not to drop more than 2.00 cm vertically on its path to the target?

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Physics: With what velocity should the water stream be launched
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