Hey Guys, here are my questions (with the work included.) Please tell me what I am doing wrong as it is not working on webassign. A stone is thrown vertically upward with a speed of 15.0 m/s from the edge of a cliff 80.0 m high. (a) How much later does it reach the bottom of the cliff? s (b) What is its speed just before hitting? m/s (c) What total distance did it travel? m Okay the answer to (c) is 102.9 m (it is the correct answer.) For A (please open the attached picture if it helps.) Basically I found the time from when the stone is thrown up to the time when the max height is reached. (velocity = 0) WIth that time, I doubled that to find the time until the 80 m cliff is reached. Then, I found the time it takes for the rock to reach the bottom of the cliff with the equation X= Vi(t) + .5at^2 (a = 9.8; x = 80; Vi = 15 and t = ?) But unfortunately when I add up the two time measures, they are not working.