A $10 \mathrm{~kg}$ Object Has a Moment of Inertia Of $1.25 \mathrm{~kg} \mathrm{~m}^{2}$

Multiple Choice

A $10 \mathrm{~kg}$ object has a moment of inertia of $1.25 \mathrm{~kg} \mathrm{~m}^{2}$ . If a torque of $2.5 \mathrm{~N} \cdot \mathrm{m}$ is applied to the object, the angular acceleration is

A) $2.0 \mathrm{rad} / \mathrm{s}^{2}$ .
B) $4.0 \mathrm{rad} / \mathrm{s}^{2}$ .
C) $8.0 \mathrm{rad} / \mathrm{s}^{2}$ .
D) $10 \mathrm{rad} / \mathrm{s}^{2}$ .
E) $6.0 \mathrm{rad} / \mathrm{s}^{2}$ .