A 0.836 kg toy car is powered by one 9V battery (9.00 V)connected directly to a small DC motor. The car has an effectiveenergy conversion efficiency of 36.1 % , meaning that 36.1 % of theelectric energy applied to the motor is converted intotranslational kinetic energy. After 7.88 s , the car, which isinitially at rest, reaches a speed of 3.43 m / s . What is theaverage current supplied to the car's motor?
