Question 6 of 8 N acts through a displacement m. How much work does this force do? A waterfall is 68 meters high. What is the temperature rise in Kelvins of the water from just before to just after it hits the rocks at the bottom of the falls, assuming negligible air resistance during the fall and that the water Work = i doesn't rebound but just splats onto the rock? Save for Later K Attempts: 0 of 4 used Submit Answer Save for Later Attempts: 0 of 4 used Submit Answer Part 2 (b) An object with mass 3.6 kg moves from a location m near the Earth's surface to location m. What is the change in the potential energy of the system consisting of the object plus the Earth? Change of potential energy = Save for Later Attempts: 0 of 4 used Submit Answer Part 3 (c) A spring whose stiffness is 890 N/m has a relaxed length of 0.64 m. If the length of the spring changes from 0.54 m to 0.93 m, what is the change in the potential energy of the spring? Change of potential energy = i J Save for Later Attempts: 0 of 4 used Submit Answer SUPPORT SUPPORT U Question 7 of 8 / 15 Chapter 7: Homework 1