**Projectile Motion Problem**A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 140 m/s from the top of a cliff 146 m above level ground, where the ground is taken to be y = 0.**(a)** What is the initial total mechanical energy of the projectile? (Give your answer to at least three significant figures.) [Answer: ______ J]**(b)** Suppose the projectile is traveling 99.2 m/s at its maximum height of y = 350 m. How much work has been done on the projectile by air friction? [Answer: ______]**(c)** What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up? [Answer: ______ m/s]

Name: **Projectile Motion Problem**A 44.0-kg projectile is fired at an angl
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Description: **Projectile Motion Problem**A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 140 m/s from the top of a cliff 146 m above level ground, where the ground is taken to be y = 0.**(a)** What is the initial

Write the given values with the suitable variables. m=44 kgθ=30°u=140 m/sh=146 m Here, m, θ, u, and…

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A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 140 m/s from the top of a cliff 146 m above level ground, where the ground is taken to be y = 0. (a) What is the initial total mechanical energy of the projectile? (Give your answer to at least three significant figures.) (b) Suppose the projectile is traveling 99.2 m/s at its maximum height of y = 350 m. How much work has been done on the projectile by air friction? (c) What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up? m/s

A 44.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 140 m/s from the top of a cliff 146 m above level ground, where the ground is taken to be y = 0. (a) What is the initial total mechanical energy of the projectile? (Give your answer to at least three significant figures.) (b) Suppose the projectile is traveling 99.2 m/s at its maximum height of y = 350 m. How much work has been done on the projectile by air friction? (c) What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up? m/s

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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