An object is dropped from a balloon 3600 feet above the ground. Find the time it takes to reach

the ground if the height of the object is given by the equation h(t) = –16t^2 + 3600

2 answers

it hits the ground when its height is zero, so just solve for t in

–16t^2 + 3600 = 0
plug in zero for h (the ground)

solve the quadratic for t