SOLUTION: 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 i

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.
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
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.
**
When the stone hits the ground, h(t)=0=-9.8t^2�10t+310
Solve for t using following quadratic formula:

a=-9.8, b=-10, c=310
ans: t=5.14 sec
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