SOLUTION: Solve the application. See Examples 11-12. (Objective 4) The height h (in feet) of an object that is dropped from a height of s feet is given by the formula h = s − 16t2, wher

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve the application. See Examples 11-12. (Objective 4) The height h (in feet) of an object that is dropped from a height of s feet is given by the formula h = s − 16t2, wher      Log On


   

Question 1156079: Solve the application. See Examples 11-12. (Objective 4)
The height h (in feet) of an object that is dropped from a height of s feet is given by the formula h = s − 16t2, where t is the time the object has been falling. A 5-foot-tall woman on a sidewalk looks directly overhead and sees a window washer drop a bottle from 6 stories up. How long does she have to get out of the way? (A story is 10 feet. Round your answer to two decimal places.)
The woman has about
seconds to move.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+h+=+%28+s+-+5+%29+-+16t%5E2+
+s+=+10%2A6+=+60+ ft
The bottle will hit her on the head when +h+=+5+ ft
+5+=+60+-+16t%5E2+
+-16t%5E2+=+-55+
+t%5E2+=+55%2F16+
+t%5E2+=+3.4375+
+t+=+1.854+
She has 1.85 sec to move.
Definitely get a second opinion if
the answer is not already known