Concept explainers
A person standing on the roof of a building throws a ball directly upward. The ball misses the rooftop on its way down and eventually strikes the ground. The function
describes the ball’s height above the ground, s (t), in feet, t seconds after it was thrown.
Find the ball’s average velocity between the time it was thrown and 2 seconds later.
Find the ball’s average velocity between 2 and 4 seconds after it was thrown.
What do the signs in your answers to parts (a) and (b) mean in terms of the direction of the ball’s motion?
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Student's Solutions Manual For Precalculus
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