SOLUTION: This question is asking a difficult question. Says, find the time required for an object to fall to the ground from a building that is 1400 ft high. This explains to use to dete

Algebra ->  Radicals -> SOLUTION: This question is asking a difficult question. Says, find the time required for an object to fall to the ground from a building that is 1400 ft high. This explains to use to dete      Log On


   

Question 86686This question is from textbook algebra
: This question is asking a difficult question.
Says, find the time required for an object to fall to the ground from a building that is 1400 ft high. This explains to use to determine the expression to use t=1/4 sq rt s, in which s is the distance fallen.
I need help, I do not understand
 This question is from textbook algebra

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Well, you are given the formula for finding the time for the object to fall a distance of s feet.
You are also given the distance, s, which is just the height of the building from which the object is dropped.
So all you really need to do is to substitute the given value of s (1400 feet)into the appropriate place in the formula and evaluate it.
t+=+%281%2F4%29sqrt%28s%29 Substitute s = 1400.
t+=+%281%2F4%29sqrt%281400%29 Simplify.
t+=+%281%2F4%29%2A10%2Asqrt%2814%29
t+=+2.5sqrt%2814%29seconds. This is the exact answer.
t+=+2.5%283.74%29
t+=+9.35seconds, approximately.