$($Ch$9$ GTC$?9-8)$ A uniform disk, a uniform sphere, and a block are released from rest down adjacent ramps of identical angle. The disk and sphere roll without slipping, while the block slides without friction. All three objects start from the same height. Which will object reach the bottome of the ramp first?

A$.$ The uniform disk.

B$.$ The uniform sphere.

C$.$ The block.

smaler inertia

move faster

$K_f=x$