The height (in feet) of an object dropped off of a bridge can be modeled by the equation s(t)=-16t^2+144. How long will it be before the object hits the water below the bridge? Helpp...

Question

anonymous · Answer

do you know how to solve for quadratics? you are just solving for t

anonymous · Answer

Okay, thanks. But what would be the unit for time since it doesn't say?

anonymous · Answer

if it doesnt say just label it as units, but i would think they were talking about seconds.  and just so you can check, the answer is t=3

anonymous · Answer

just so you can check if you get the right answer.