An object falls 16t^2 feet in t seconds, you drop a rock from a bridge that is 64 feet above the water will the rock hit the water in 2 seconds.Explain

Answer 1

h(t) = -16t^2 + 64

h(2) = -16(2^2) + 64 = -64+64 = 0,

means it hits the water after 2 seconds

exactly 2 seconds