A toy car made of plastic is placed between two large metal

A toy car made of plastic is placed between two large metal electrodes, as shown in the figure below. A negative charge is applied to the car, as shown. A DC voltage of 100,000 volts is then applied between the two electrodes. If the distance between the electrodes is 1 meter, the mass of the car is 100 grams, and if the car moves and strikes the positive electrode with a velocity of 5 m/s, calculate the amount of charge that was applied to the car.

Solution

KE= 1/2mv²

= 1/2*100*(5)²= 1250J

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