Can anyone help me with thiss?

The Giant Drop, in Australia, is the tallest free-falling ride in the world according to the Guinness Book of World Records (March 7, 2006). It is 120 meters tall. Use the given equation and conversion factor to approximate the time (seconds) that it takes the dropped object to fall a distance of 120 meters. Solve for "t". Round the answer to the nearest whole second.