SOLUTION: The formula s=16t^2 is used to approximate the distance, s, in feet that an object falls freely in t seconds. Use this formula to sole the problem:
A man drops his keys off a bui
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: The formula s=16t^2 is used to approximate the distance, s, in feet that an object falls freely in t seconds. Use this formula to sole the problem:
A man drops his keys off a bui
Log On
Question 210320: The formula s=16t^2 is used to approximate the distance, s, in feet that an object falls freely in t seconds. Use this formula to sole the problem:
A man drops his keys off a building 1420 feet high. How long does it take the keys, falling freely to hit the ground? Answer by Earlsdon(6294) (Show Source):
You can put this solution on YOUR website! Set s = 1420. Divide both sides by 16. Take the square root of both sides.
It takes 9.42 seconds.