Consider a race between the following three objects: object 1, a disk; object 2, a solid sphere; and object 3, a hollow spherical shell. All objects have the same mass and radius.

(a) Rank the three objects in the order in which they finish the race. Indicate a tie where appropriate.

(b) Rank the objects in order of increasing kinetic energy at the bottom of the ramp. Indicate a tie where appropriate.