*42. D In the javelin throw at a track-and-field event, the javelin islaunched at a speed of 29 m/s at an angle of 36° above the horizontal. Asthe javelin travels upward, its velocity points above the horizontal at anangle that decreases as time passes. How much time is required for theangle to be reduced from 36° at launch to 18°?

Rewrite expression for time using direction of the velocity tanθ=vyvx=v-gtvcosθit=v-vcosθitanθg

Answered: *42. D In the javelin throw at a…

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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