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A 0.364 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 52.6%, meaning that 52.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 4.96 s, the car, which is initially at rest, reaches a speed of 2.35 m/s. What is the average current supplied to the car's motor?

A 0.364 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 52.6%, meaning that 52.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 4.96 s, the car, which is initially at rest, reaches a speed of 2.35 m/s. What is the average current supplied to the car's motor?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A 0.364 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 52.6%, meaning that 52.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 4.96 s, the car, which is initially at rest, reaches a speed of 2.35 m/s. What is the average current supplied to the car's motor? average current: A
Transcribed Image Text:A 0.364 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 52.6%, meaning that 52.6% of the electric energy applied to the motor is converted into translational kinetic energy. After 4.96 s, the car, which is initially at rest, reaches a speed of 2.35 m/s. What is the average current supplied to the car's motor? average current: A
Expert Solution
Step 1

kinetic energy of car =12mv2=12×0.364×2.352=1.005095 Joules

If E is the energy suplied by the battery then

52.6100E=1.005095

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