A ball is thrown downward with a speed of 14 ft/s from the top of a 196-foot-tall building. After t seconds, its height above the ground is given by s(t) = -2812 – 14t + 196. (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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter9: Quadratic Functions And Equations
Section9.4: Solving Quadratic Equations By Factoring
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A ball is thrown downward with a speed of 14 ft/s from the top of a 196-foot-tall building. After t seconds, its height above the ground is given by
s(t) = -28t2 - 14t + 196.
(@) 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
Transcribed Image Text:A ball is thrown downward with a speed of 14 ft/s from the top of a 196-foot-tall building. After t seconds, its height above the ground is given by s(t) = -28t2 - 14t + 196. (@) 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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