A $4.00 \mathrm{~kg}$ Solid Sphere of Radius $5.00 \mathrm{~cm}$ Starts from Rest and Rolls Without Slipping Down a 30

Multiple Choice

A $4.00 \mathrm{~kg}$ solid sphere of radius $5.00 \mathrm{~cm}$ starts from rest and rolls without slipping down a 30.0 degree incline. The acceleration of the center of mass of the solid sphere is

A) $3.50 \mathrm{~m} / \mathrm{s}^{2}$ .
B) $3.00 \mathrm{~m} / \mathrm{s}^{2}$ .
C) $2.00 \mathrm{~m} / \mathrm{s}^{2}$ .
D) $2.50 \mathrm{~m} / \mathrm{s}^{2}$ .
E) $1.50 \mathrm{~m} / \mathrm{s}^{2}$ .