SOLUTION: Find the time required for an object to fall to the ground from a building that is 1400 ft high.

Question 113629: Find the time required for an object to fall to the ground from a building that is 1400 ft high.
Found 2 solutions by scott8148, amalm06:
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let t=time ___ neglecting air resistance, t^2=1400/16
Answer by amalm06(224) (Show Source): You can put this solution on YOUR website!
I solved the same problem earlier, using only energy conservation and momentum principles: https://www.algebra.com/algebra/homework/Polynomials-and-rational-expressions/Polynomials-and-rational-expressions.faq.question.91991.html. Here is a more "mathematical" solution:

Consider:

Integrate both sides:

So that

Solve for t: t=9.33 s (Answer)
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