Question

If an object is dropped from a height of 144 feet, the function h(t)=-16t^2+144, gives the height of the object after t seconds. When will the object hit the ground?

Answer 1

You want to find the "t" value when \(h(t)=-16t^2+144=0\) Because if \(h(t)=0\), then the height of the object is zero and therefore it hit the ground so try solving for \(t\) in:
\[144-16x^2=0\]