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Concept explainers
a)
To represent: The change in the height of an object in free fall in the 430 foot shaft.
a)
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Answer to Problem 56SR
Change in height by the object will be represented by a negative integer
Explanation of Solution
Given information: To stimulate space travel, NASA uses 430-foot shaft and an object takes 5 second in a free fall while covering this 430 foot shaft.
Concept used: As object is coming down from space, it means it’s a decrease in its initial value ,so the total change in its height will be represented by a negative integer. And it is used
Calculation: As in 5 seconds, objects covers 430 foot .
So, total distance covered in one second
Conclusion: It is concluded that change in height by the object will be represented by a negative integer
b)
To find: How far the object travel in one second, on average.
b)
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Answer to Problem 56SR
Total distance covered by object in one second is 86 feet.
Explanation of Solution
Given information: To stimulate space travel, NASA uses 430-foot shaft and an object takes 5 second in a free fall while covering this 430 foot shaft.
Concept used: As object is coming down from space, it means it’s a decrease in its initial value ,so the total change in its height will be represented by a negative integer. And it is used unitary method, to get covering distance in one second, in which 430 is divided by 5.
Calculation: As in 5 seconds, objects covers 430 foot .
So, total distance covered in one second
Conclusion: It is concluded that change total distance covered by object in one second is 86 feet.
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Pre-Algebra Student Edition
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