A 0.482-kg toy car is powered by three D cells (4.50 V total) connected directly
ID: 3896752 • Letter: A
Question
A 0.482-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 58.1%, meaning that 58.1% 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 3.43 m/s. What is the average current supplied to the car's motor? A 0.482-kg toy car is powered by three D cells (4.50 V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 58.1%, meaning that 58.1% 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 3.43 m/s. What is the average current supplied to the car's motor?Explanation / Answer
Potential of battery=4.50V
Mass of car=0.482kg
Final speed of car=3.43 m/s
Total energy of car in motion=
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