You throw an 18.0 N rock into the air from ground level and observe that, when it is 11.0 m high, it istraveling upward at 18.0 m/s.Use the work-energy principle to find the rock's speed just as it left the ground. Express youranswer in meters per second.a.b. Use the work-energy principle to find the maximum height the rock will reach. Express youranswer in meters.Fleas are agile, wingless insects that feed on the blood of their hosts. Although they are typically 2-3mm long with a mass of 4.1×10 *kg, they have an astonishing ability to jump when threatened. Theirpropulsion, which can briefly produce accelerations more than 100 times that of gravity, comes not frommuscles but, in fact, from an elastomeric protein called resilin, which acts as a spring. Given that theypical launch velocity of a flea is about 1 m/s, what total energy must be stored in the resilin just beforehe flea jumps? Express your answer in joules.pasco

Given weight of the rock=mg=18 N m=18/9.8=1.84 kg speed at height (h=11 m) is 18 m/s

You throw an 18.0 N rock into the air from ground level and observe that, when it is 11.0 m high, it is traveling upward at 18.0 m/s. a. Use the work-energy principle to find the rock's speed just as it left the ground. Express your answer in meters per second. b. Use the work-energy principle to find the maximum height the rock will reach. Express your answer in meters.

You throw an 18.0 N rock into the air from ground level and observe that, when it is 11.0 m high, it is traveling upward at 18.0 m/s. a. Use the work-energy principle to find the rock's speed just as it left the ground. Express your answer in meters per second. b. Use the work-energy principle to find the maximum height the rock will reach. Express your answer in meters.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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