SOLUTION: A penny is dropped off the Empire State Building which is 1250 feet tall. If the penny's pathway can be modeled by the equation h=-16t^2+1250, how long would it take the penny to s

Question 1156022: A penny is dropped off the Empire State Building which is 1250 feet tall. If the penny's pathway can be modeled by the equation h=-16t^2+1250, how long would it take the penny to strike a 6 foot tall person?
Found 2 solutions by BlGDAVE, ikleyn:
Answer by BlGDAVE(19)   (Show Source): You can put this solution on YOUR website!

Answer by ikleyn(52784)   (Show Source): You can put this solution on YOUR website!
.

They want you solve this quadratic equation h(t) = 6, which is -16t^2 + 1250 = 6, 16t^2 = 1250-6 = 1244 t^2 = = 77.75 t = = 8.82 seconds (approximately). ANSWER

Solved.

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In this site, there is a bunch of lessons on a projectile thrown/shot/launched vertically up
    - Problem on a projectile moving vertically up and down
    - Problem on an arrow shot vertically upward
    - Problem on a ball thrown vertically up from the top of a tower
    - Problem on a toy rocket launched vertically up from a tall platform

Consider these lessons as your textbook, handbook, tutorials and (free of charge) home teacher.
Read them attentively and learn how to solve this type of problems once and for all.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook under the topic "Projectiles launched/thrown and moving vertically up and dawn".

Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.

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