Rotational Kinetic Energy *** A sphere, a solid cylinder, and a thin-walled hollow cylinder all have the same mass m and radius r. The three are initially held side by side on an incline of vertical height h. They are all released simultaneously and roll down the incline. Part 1 + Derive an equation for finding the final velocity of an object rolling down an incline in terms of m, r, h, g, and the object's moment of inertia (1). Vf Part 2 Which one reaches the bottom of the incline first? The (No answer given) Part 3 Which one reaches the bottom of the incline last? The (No answer given)