A ball is thrown downward with a speed of 12 ft/s from the top of a 144-foot-tall building. After t seconds, its height above theground is given by s(t) = -24t?12t + 144.(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

Answered: Image /qna-images/answer/c6993da4-4b8b-4cfe-b9ce-732f31c35d5e.jpg

A ball is thrown downward with a speed of 12 ft/s from the top of a 144-foot-tall building. After t seconds, its height above the ground is given by s(t) = -24t2 - 12t + 144. (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 12 ft/s from the top of a 144-foot-tall building. After t seconds, its height above the ground is given by s(t) = -24t2 - 12t + 144. (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 10.83TI: An arrow is shot from the ground into the air at an initial speed of 108 ft/sec. Use the formula...

See similar textbooks

Similar questions

A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial height of 8 feet. Use the formula h=16t2+v0t+8 to determine how many seconds it will take for the bullet to hit the ground. (That is, when will h=0 ?)
Ben starts walking along a path at 4 mi/h. One and a half hours after Ben leaves, his sister Amanda begins jogging along the same path at 6 mi/h. How long will it be before Amanda catches up to Ben?
Solve: ex2ex=e2.
The rate of change of an autocatalytic chemical reaction is kQxkx2 where Q is the amount of the original substance, x is the amount of substance formed, and k is a constant of proportionality. Factor the expression.
An arrow is shot from the ground into the air at an initial speed of 108 ft/sec. Use the formula h=16t2+v0t to determine when the arrow will be 180 feet from the ground. Round the nearest tenth of a second.
Find the unknown value. 27. y varies jointly with x and the cube root of 2. If when x=2 and z=27,y=12, find y if x=5 and z=8.
Using Figure 7, solve f(x)=1 .