Concept explainers
Find the distance in feet when the object fall in the first 7 second after it is dropped.
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Answer to Problem 73E
In seven seconds the object falls a distance of 784 ft..
Explanation of Solution
Given:
The object fall in 1st second is 16ft
Object fall in 2nd second is 48ft
Object fall in 3rd second is 80ft
In 4th second it fall 112 ft
The object fall in 1st second is 16ft
Object fall in 2nd second is 48ft
Object fall in 3rd second is 80ft
In 4th second it fall 112 ft
Thus the terms
Here
The sum of n term of the arithmetic sequence is
Let
Hence in seven seconds the object falls a distance of 784 ft.
Chapter 9 Solutions
EBK PRECALCULUS W/LIMITS
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