1. The problem statement, all variables and given/known data This problem concerns the mathematical treatment of a simple model of an electric toy car of mass m, which is initially stationary. The bat- teries in the car can be considered as an electrical power source with constant power P. Find the limiting value of the velocity at very large times and comment on whether your result seems reasonable. 2. Relevant equations On calculating I got v=sqrt(2Pt/m). 3. The attempt at a solution As t -> Infinity, so does v-> Infinity. But that does not makes sense. Where am I wrong. Please help.