Calculate the height of a cliff it takes 2.33 s for a rock to hit the ground when it is thrown straight up from the cliff with no initial velocity of 8.05 m/s

Calculate the height (in m) of a cliff if it takes 2.33 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial v number.) m How long (in s) would it take to reach the ground if it is thrown straight down with the same speed? (Enter a number.)