Concept explainers
a)
To represent: The change in the height of an object in free fall in the 430 foot shaft.
a)
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)
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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