document.write( "Question 624831: If a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t) = -9.8t^2 – 10t + 310, 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. \n" ); document.write( "

Algebra.Com's Answer #393090 by lwsshak3(11628) $\"\"$ $\"About$

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If a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t) = -9.8t^2 – 10t + 310, 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.
\n" ); document.write( "**
\n" ); document.write( "When the stone hits the ground, h(t)=0=-9.8t^2–10t+310
\n" ); document.write( "Solve for t using following quadratic formula:
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "a=-9.8, b=-10, c=310
\n" ); document.write( "ans: t=5.14 sec \n" ); document.write( "

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