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The electric motor of a model train acce...

The electric motor of a model train accelrates the train from rest to `0.620ms^-1` in `21.0ms`. The total mass of the train is `875g`. Find the average power delivered to the train during the acceleration.

Text Solution

Verified by Experts

`P_(av)=(W)/(Deltat)=(K_f)/(Deltat)=(mv^2)/(2Deltat)=(0.875kg(0.620ms^-1)^2)/(2(21xx10^-3s))=8.0W`
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