154. A ball is thrown downward with a speed of 8 ft/s from the top of a 64-foot-tall building. After t seconds,heightitsabovethegroundisgivenbys(t) = -16t2 – 8t + 64.Determine how long it takes for the ball to hit theground.b. Determine the velocity of the ball when it hits theground.a.

Answered: Image /qna-images/answer/cb93563b-924e-41a2-be6b-d09743dd8a16.jpg

Answered: s(t) = -16t– 8t + 64. %3D a. Determine…

s(t) = -16t– 8t + 64. %3D a. Determine how long it takes for the ball to hit the ground. b. Determine the velocity of the ball when it hits the ground.

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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