A cannon ball is launched upward with a velocity of 80 feet per second from the top of a 224 foot tall building. Its height after t seconds is given by the equation S=−16t2+80t+224. When does the cannon ball hit the ground?

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
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Chapter10: Quadratic Equations
Section10.4: Solve Applications Modeled By Quadratic Equations
Problem 159E: A bullet is fired straight up from a BB gun with initial velocity 1120 feet per second at an initial...
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A cannon ball is launched upward with a velocity of 80 feet per second from the top of a 224 foot tall building. Its height after t seconds is given by the equation S=−16t2+80t+224. When does the cannon ball hit the ground?

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