The height of an object dropped from the top ofa 64-foot building is given by h(t)= -16^2+64. How long will it take the object to hit the ground

Answer 1

There is a typo in the way this problem is stated. The height h(t) should be written as:

h(t) = -16t² + 64 Setting the height equal to zero we have:

-16t² + 64 = 0 So 16t² = 64

Then t² = 4 Thus t = 2