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The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - 16t² +374t+15. After how many seconds is the ball falling at 120 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.

The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - 16t² +374t+15. After how many seconds is the ball falling at 120 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.

Elementary Algebra
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...
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The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - 16t² +374t+15. ... After how many seconds is the ball falling at 120 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.
Transcribed Image Text:The height (feet) of a ball launched in the air t seconds after it is launched is given by: f(t) = - 16t² +374t+15. ... After how many seconds is the ball falling at 120 feet per second? sec. If necessary, round to two decimal places. If there is more than one correct answer, separate them with commas.
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