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) = -9.8t2 – 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.

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-9.8t^2 - 10t + 190 = 190
t(-9.8t-10) = 0
t=-10/9.8
Thus it will fall after 10/9.8 secs

yes i saw that radar and it is one solution.

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