A ball is thrown downward with a speed of 18 ft/s from the top ofa 324-foot-tall building. After t seconds, its height above theground is given by s(t) = -36t2 – 18t + 324.(a) Determine how long it takes for the ball to hit the ground.sec(b) Determine the velocity of the ball when it hits the ground.ft/sec

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A ball is thrown downward with a speed of 18 ft/s from the top of a 324-foot-tall building. After t seconds, its height above the ground is given by s(t) = -36t² – 18t + 324. (a) Determine how long it takes for the ball to hit the ground. sec (b) Determine the velocity of the ball when it hits the ground. ft/sec

A ball is thrown downward with a speed of 18 ft/s from the top of a 324-foot-tall building. After t seconds, its height above the ground is given by s(t) = -36t² – 18t + 324. (a) Determine how long it takes for the ball to hit the ground. sec (b) Determine the velocity of the ball when it hits the ground. ft/sec

Elementary Algebra

17th Edition

ISBN:9780998625713

Author:Lynn Marecek, MaryAnne Anthony-Smith

Publisher:Lynn Marecek, MaryAnne Anthony-Smith

Chapter10: Quadratic Equations

Section10.4: Solve Applications Modeled By Quadratic Equations

Problem 159E: A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial...

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