Question 120492: The time in seconds it takes for an object to fall from rest is given by t = 1/4squared s, in which s is the distance fallen. What is the time it takes an object to fakk from a building 1400 feet high? I have tried 1/4 the distance fallen squared, and I just don't know how to figure this one out in seconds?
Answer by solver91311(24713)   (Show Source):
You can put this solution on YOUR website! Your formula is incorrect.
If you drop an object from a fixed height, s, the height, h, of the object after t seconds is given by  . You want the time it takes for the object starting at 1400 feet to hit the ground, or when h = 0, so:
 , roughly 9 and 1/3 seconds.
In general, if you drop an object from height s in feet and you want to know the time it takes to reach height h in feet, it takes:
 seconds.
Also, if the heights are given in meters, then the constant factor is different:
 , so
Hope that helps
John
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