
Concept explainers
Sports The height h, in feet, of a ball that is released 4 ft above the ground with an initial upward velocity of 80 ft/s is a function of the time t, in seconds, the ball is in the air and is given by
- Find the height of the ball above the ground 2 s after it is released.
- Find the height of the ball above the ground 4 s after it is released.

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