ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is 80 meters high. The height of the ball is given by the quadratic equation h = -4.9t 2 + 28t + 80 where h is in meters and t is the time in seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the nearest tenth of a second

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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A ball is thrown upward with an initial velocity of 28 meters per second from a cliff that is 80 meters high. The
height of the ball is given by the quadratic equation h = -4.9t
2 + 28t + 80 where h is in meters and t is the time in
seconds since the ball was thrown. Find the time it takes the ball to hit the ground. Round your answer to the
nearest tenth of a second. 

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