SOLUTION: If a stone is tossed from the top of a 190 meter building, the height of the stone as a function of time is given by h(t) = -9.8t^2 -10t +190, where t is in seconds, and height is

Question 549675: If a stone is tossed from the top of a 190 meter building, the height of the stone as a function of time is given by h(t) = -9.8t^2 -10t +190, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundredth�s place; include units in your answer.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

Note that if I make , which is
when the stone is thrown from the
top of the building, I get ft as I should:

The problem wants to know what is
when , or ground level.

Use the quadratic formula

I can't finish this because my cat, the Widster, just curled
up beside me, and I'm not going to disturb him to get a calculator.
But you get the idea.
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