Power in MU any hull

Torque.

please tell me I cant understand what does torque mean

I think it is the strange of a motor

It isn't a matter of which motor you have, but the way that motor operates. Imagine a car, and then imagine you've chained a rock to the end of this car. A car with low torque would not be able to pull the rock, but a rock with a greater torque would be able to. It isn't a matter of how fast the car can go, but rather, the amount of torque it has. :)