If a stone is tossed from the top of a 270 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 270, 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

Question

anonymous · Answer

270 = -9.8t^2 - 10t + 270
solve for t

anonymous · Answer

when it hits the ground $h=0$ so set your equation =0 and solve for t

anonymous · Answer

$$-9.8t^2-10t+270=0$$ etc

anonymous · Answer

no you need to solve for t

anonymous · Answer

i would use the quadratic formula