uninterrupted for 2421 feet before entering the river below. The height h above the river Falls in Venezuela is the tallest waterfall in the world. Water falls in feet of water going over the edge of the waterfall is modeled by h(t)=-1612+2421, where t is the time in seconds after the initial fall. A. Estimate the time it takes for the water to reach the river. B. Ribbon Falls in California has a height of 1612 ft. Approximately how much longer does it take water to reach the bottom when going over Angel Falls than when going over Ribbon Falls? Textbook p. 545 #36 Safety: If a tightrope walker falls, he will land on a safety net. His height h in feet after a fall can be modeled by h(t) = 60-16t2, where t is the time in seconds. The safety net is 11 feet off the ground. How many seconds will the tightrope walker fall before landing on the safety net?