SOLUTION: The height, h (in feet), of a falling object on Mars is given h=-6t^2+s, where t is the time in seconds and s is the initial height in feet. If an object were dropped from a height

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Question 174737: The height, h (in feet), of a falling object on Mars is given h=-6t^2+s, where t is the time in seconds and s is the initial height in feet. If an object were dropped from a height of 145 feet, how long would it take to reach the ground?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
h+=+-6t%5E2+%2B+s
What the problem is saying is that the initial height
is 145' and they want to know how long it will take to
drop to 0' (all the way to the ground), so
h+=+0
s+=+145
0+=+-6t%5E2+%2B+145
6t%5E2+=+145
t%5E2+=+145%2F6
t+=+sqrt%2824.167%29
t+=+4.92 sec