A baseball diamond is a square whose sides are 90 ft long. If the batter runs at the first base at the rate of 20 fps, how fast is his distance from second base changing when he has run 50 ft?

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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A baseball diamond is a square whose sides are 90 ft long. If the batter runs at the first base at the rate of 20 fps, how fast is his distance from second base changing when he has run 50 ft?

a. 80/971/2

b. -10/901/2                               

c. -20/971/2                                       

d. -90/971/

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