A model rocket is launched from the ground at rest. The acceleration of the rocket is å = 90 ŷ. After 1.5 m seconds, the rocket fuel is expended, and the acceleration of the rocket returns to à = -9.8 ŷ . a) Find the velocity of the rocket just as the fuel is expended (Answer: 135ŷ“) b) Find the height of the rocket just as the fuel is expended (Answer: 101ŷ m) c) How long does it take the rocket to reach maximum height after the fuel is expended? (Answer: 13.8 s) d) What is the maximum height of the rocket? (Answer: 1031 m) e) What is the impact velocity of the rocket as it hits the ground? (Answer: –142ý “)

A model rocket is launched from the ground at rest. The acceleration of the rocket is å = 90 ŷ. After 1.5 m seconds, the rocket fuel is expended, and the acceleration of the rocket returns to à = -9.8 ŷ . a) Find the velocity of the rocket just as the fuel is expended (Answer: 135ŷ“) b) Find the height of the rocket just as the fuel is expended (Answer: 101ŷ m) c) How long does it take the rocket to reach maximum height after the fuel is expended? (Answer: 13.8 s) d) What is the maximum height of the rocket? (Answer: 1031 m) e) What is the impact velocity of the rocket as it hits the ground? (Answer: –142ý “)

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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