
Concept explainers
(a)
To Find: The time for which the ball is in the air.
(a)

Answer to Problem 70PPS
The time for which the ball is in the air is
Explanation of Solution
Given:
The equation to model the height that the ball attains is
Calculation:
The ball is in the air when the time is more than 0 then the time for which the ball is in the air is,
Thus, the time for which the ball is in the air is
(b)
To Find: The distance which the ball travelled before it hit the ground.
(b)

Answer to Problem 70PPS
Thus, the distance travelled by the ball is
Explanation of Solution
Consider the model for the distance is,
Then, the distance travelled by the ball is,
(c)
To Find: The maximum height that the ball attains.
(c)

Answer to Problem 70PPS
The maximum height is
Explanation of Solution
Consider the maximum height that the ball attains is the x coordinate of the vertex of the height function by the use of the axis of symmetry equation as,
Thus, the maximum height that the ball attains is ,
Chapter 5 Solutions
Algebra 2
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