1. The problem statement, all variables and given/known data The highest waterfall in Canada is the Della Falls in British Columbia, with a change in elevation of 4.4 102 m. When the water has fallen 12% of its way to the bottom, its speed is 33 m/s. Neglecting air resistance and fluid friction, determine the speed of the water at the top of the waterfall. 2. Relevant equations E before = E after 1/2 mv^2 + mgh = 1/2 mv^2 + mgh v^2 + 2gh = v^2 + 2gh v^2 = v^2 + 2gh - 2gh v = √v^2 + 2gh - 2gh 3. The attempt at a solution GIVENS: waterfall distance from ground = 440m V2= 33m/s water fallen at 12% distance = 387.2m v = √v^2 + 2gh - 2gh v = √(33m/s)^2 + 2(9.8 m/s^2)(387.2m) - 2(9.8 m/s^2)(440m) v=7.35m/s now the answer in the book is 5.0m/s and i was wondering what is the mistake that is made ?? or is the book just incorrect? thank you for your help in advance..