A $20.0 \mathrm{~kg}$ Hollow Cylinder $\left(\mathrm{I}=\mathrm{MR}^{2}\right)$ Has a Diameter Of $50.0 \mathrm{~cm}$ the Cylinder Is Rolling Down a Hill with a 50.0

Multiple Choice

A $20.0 \mathrm{~kg}$ hollow cylinder $\left(\mathrm{I}=\mathrm{MR}^{2}\right)$ has a diameter of $50.0 \mathrm{~cm}$ . The cylinder is rolling down a hill with a velocity of $5.00 \mathrm{~m} / \mathrm{s}$ . The rotational kinetic energy of the rolling cylinder is

A) $225 \mathrm{~J}$ .
B) $250 \mathrm{~J}$ .
C) $150 \mathrm{~J}$ .
D) $175 \mathrm{~J}$ .
E) $200 \mathrm{~J}$ .