A 0.718 kg toy car is powered by one D cell (1.50 V) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 41.6%, meaning that 41.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.15 s, the car, which is initially at rest, reaches a speed of 2.89 m/s. What is the average current supplied to the car's motor? average current: A

A 0.718 kg toy car is powered by one D cell (1.50 V) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 41.6%, meaning that 41.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 7.15 s, the car, which is initially at rest, reaches a speed of 2.89 m/s. What is the average current supplied to the car's motor? average current: A

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter21: Current And Direct Current Circuits

Section: Chapter Questions

Problem 69P

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