A solid sphere and a hollow cylinder of the same mass and radius have a rolling race down an incline as in the figure. The sphere has a smaller rotational inertia than the cylinder. They
start at rest on an incline at a height h above a horizontal plane. The race then continues
along the horizontal plane. The coefficient of rolling friction between each rolling object and
the surface is the same.

A. is the total kinetic energy (sum of rotational and linear) at the bottom of the inclined plane, for the cylinder less than; greater than; or the same as the total kinetic energy of the sphere.
- greater
-less
-the same
Briefly justify your answer

B. Which object gets to the bottom?
-Sphere
-Cylinder
Briefly Justify your answer

C. A student is trying to write an expression for the speed of either object at the bottom of the inclined plane he finds the following equation on the Internet. V= (I’ll attach a picture of it), which assumes the moment of inertia of an object is l=kmr^2. Regardless of whether the equation is correct, does it agree with your qualitative reasoning for part b.
-yes
-no
Briefly explain your reasoning