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A balloon is released from the ground 100 meters from an observer. The balloon rises directly upward at the rate of 4 meters per second. How fast is the balloon receding from the observer 10 seconds later? A. 1.68 m/sec B. 1.36 m/sec C. 1.55 m/sec D. 1.49 m/sec

A balloon is released from the ground 100 meters from an observer. The balloon rises directly upward at the rate of 4 meters per second. How fast is the balloon receding from the observer 10 seconds later? A. 1.68 m/sec B. 1.36 m/sec C. 1.55 m/sec D. 1.49 m/sec

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Question
A balloon is released from the ground 100 meters from an observer. The balloon rises directly upward at the rate of 4 meters per second. How fast is the balloon receding from the observer 10 seconds later? A. 1.68 m/sec B. 1.36 m/sec C. 1.55 m/sec 1.49 m/sec D. A balloon is rising vertically over a point A on the ground at the rate of 15 ft/sec. A point B on the ground level with and 30 ft from A. When the balloon is 40 ft. from A, at what rate is its distance from B changing? A. B. C. D. 13 ft /s 15 ft /s 12 ft /s 10 ft /s
Transcribed Image Text:A balloon is released from the ground 100 meters from an observer. The balloon rises directly upward at the rate of 4 meters per second. How fast is the balloon receding from the observer 10 seconds later? A. 1.68 m/sec B. 1.36 m/sec C. 1.55 m/sec 1.49 m/sec D. A balloon is rising vertically over a point A on the ground at the rate of 15 ft/sec. A point B on the ground level with and 30 ft from A. When the balloon is 40 ft. from A, at what rate is its distance from B changing? A. B. C. D. 13 ft /s 15 ft /s 12 ft /s 10 ft /s
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