a.
To calculate: The maximum height of the birdie.
a.
Answer to Problem 18Q
The required maximum height of the birdie is 20 feet.
Explanation of Solution
Given information:
The function:
Calculation:
The given function is
Rewrite the above function in the vertex form
The vertex of the above function is
The y -coordinate of the above vertex is the maximum height of the birdie that is, 20.
Hence, the required maximum height of the birdie is 20 feet.
b.
To calculate: The time for which the birdie is in the air.
b.
Answer to Problem 18Q
The required time for which the birdie is in the air is 2.12 seconds.
Explanation of Solution
Given information:
The function:
Calculation:
The given function is
Rewrite the above function in the vertex form
To find the required time, solve the above equation for t .
Take square root on each side of the above expression.
Solve for t .
And,
But time cannot be negative.
Hence, the required time for which the birdie is in the air is 2.12 seconds.
Chapter 3 Solutions
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