A ball is thrown downward with a speed of 11 ft/s from the top of a 121-foot-tall building. After t seconds, its height above the ground is given by s(t) = -22t² – 11t + 121. (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 11 ft/s from the top of a 121-foot-tall building. After t seconds, its height above the ground is given by s(t) = -22t² – 11t + 121. (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 10.84TI: A man throws a ball into the air with a velocity of 96 ft/sec. Use the formula h=16t2+v0t to...
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![A ball is thrown downward with a speed of 11 ft/s from the top of a 121-foot-tall building. After t seconds, its height above the ground is given by s(t) = -22t2 – 11t + 121.
(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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F16263429-8426-4451-a6fb-a7832c69e047%2F549379c8-3cf2-4964-b42e-947132693047%2F6hipusj_processed.png&w=3840&q=75)
Transcribed Image Text:A ball is thrown downward with a speed of 11 ft/s from the top of a 121-foot-tall building. After t seconds, its height above the ground is given by s(t) = -22t2 – 11t + 121.
(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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