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 s(t) = -16t2 + 64t + 80. describes the ball’s height above the ground, s(t), in feet, t seconds after it was thrown. Solve; a. Find the ball’s average velocity between the time it was thrown and 2 seconds later. b. Find the ball’s average velocity between 2 and 4 seconds after it was thrown. c. What do the signs in your answers to parts (a) and (b) mean in terms of the direction of the ball’s motion?

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 s(t) = -16t2 + 64t + 80. describes the ball’s height above the ground, s(t), in feet, t seconds after it was thrown. Solve; a. Find the ball’s average velocity between the time it was thrown and 2 seconds later. b. Find the ball’s average velocity between 2 and 4 seconds after it was thrown. c. What do the signs in your answers to parts (a) and (b) mean in terms of the direction of the ball’s motion?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 1P

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