A ball is thrown downward with a speed of 17 ft/s from the top of a 289-foot-tall building. After t seconds, its height above the ground is given by s(t) = -34t2 – 17t + 289. (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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Chapter10: Quadratic Equations
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A ball is thrown downward with a speed of 17 ft/s from the top of a 289-foot-tall building. After t
seconds, its height above the ground is given by s(t) = -34t2 – 17t + 289.
(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
Transcribed Image Text:A ball is thrown downward with a speed of 17 ft/s from the top of a 289-foot-tall building. After t seconds, its height above the ground is given by s(t) = -34t2 – 17t + 289. (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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