The wheel on a vehicle has a rotational inertia of 2. 0 kgâ‹…m2. At the instant the wheel has a counterclockwise angular velocity of 6. 0 rad/s, an average counterclockwise torque of 5. 0 nâ‹…m is applied, and continues for 4. 0 s. What is the change in angular momentum of the wheel?