A 0.954-kg toy car is powered by four AA batteries (6.00 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 30.6%, meaning that 30.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.15 seconds, the car, which is initially at rest, reaches a speed of 1.81 m/s. What is the average current supplied to the car's motor?