11. Launch of mass m = 2 t budge, and for a time τ = 10 develops when driving on calm water speed υ = 4 m / s. Determine the traction motor F, considering it constant. Take the drag force is proportional to the speed of the movement of Al; drag coefficient k = 100 kg / s.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)