
Concept explainers
Describe a real − world situation in which a thrown object travels in the air. Write an equation that models the height of the object with respect to time, and determine how long the object travels in the air.

Answer to Problem 42HP
The ball is in the air for about 1.6 seconds.
Explanation of Solution
Given:
Describe a real − world situation in which a thrown object travels in the air. Write an equation that models the height of the object with respect to time, and determine how long the object travels in the air.
Concept Used:
If the golf player hits the ball with an upward velocity of 25 feet per second and his foot meets the ball 2 feet off the ground,
The
Calculation:
Using a graphing calculator to find the zeros
Time cannot be negative, so − 0.76 is not possible solution. Thus, the ball is in the air for about 1.6 seconds. | ![]() |
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