An object is dropped from a high cliff, and the distance (in feet) it has fallen after t seconds is given by the function  d(t) = 16t2.  Complete the table to find the average speed during the given time intervals. t = a t = b Average speed =  d(b) − d(a)/b-a   6 6.5   6 6.1   6 6.01   6 6.001   6 6.0001   Use the table to determine what value the average speed approaches as the time intervals get smaller and smaller. Is it reasonable to say that this value is the speed of the object at the instant  t = 6?  Explain. From the table it appears that the average speed approaches  ft/s

College Algebra
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ISBN:9781938168383
Author:Jay Abramson
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Chapter3: Functions
Section3.4: Composition Of Functions
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An object is dropped from a high cliff, and the distance (in feet) it has fallen after t seconds is given by the function 

d(t) = 16t2.

 Complete the table to find the average speed during the given time intervals.

t = a
t = b
Average speed = 
d(b) − d(a)/b-a
 
6 6.5  
6 6.1  
6 6.01  
6 6.001  
6 6.0001  


Use the table to determine what value the average speed approaches as the time intervals get smaller and smaller. Is it reasonable to say that this value is the speed of the object at the instant 

t = 6?

 Explain.

From the table it appears that the average speed approaches  ft/s 
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