Concept explainers
a.
To calculate: The height of after 45th second.
a.
Answer to Problem 10P
Projectile rise 14432 ft. at 45th second.
Explanation of Solution
Given information: The height of projectile in first second = 15840 ft.
The height of projectile in 2nd second = 15808 ft.
The height of projectile in third second = 15776
Since,
Hence, the above series are in A.P
The first term,
Second terms,
The common difference,
Formula used:
Now, 45th second
Calculation:
Hence, projectile rise 14432 ft. at 45th second.
b.
To calculate: Direction of the projectile and distance of the projectile.
b.
Answer to Problem 10P
The direction of the projectile is downwards and the distance is 3328ft.
Explanation of Solution
Given information: The height of projectile in first second = 15840 ft.
The height of projectile in 2nd second = 15808 ft.
The height of projectile in third second = 15776
Since,
Hence, the above series are in A.P
The first term,
Second terms,
The common difference,
Formula used:
Now, 10th min or 600 second
Calculation:
Hence, the negative sign shows the direction of the projectile is downwards and the distance is 3328ft.
Chapter 11 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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