Is the statement below wrong? 1. Assume a car is travelling on a frictionless landscape. The car engine has a constant power,P. 2. The engine produces a force, which equals to the total resultant force act upon the car. 3. F=ma. So the car should be travelling in acceration. 4.Throught time, the velocity increase as there is acceration. 5. Since P is constant, and P=Fv, F shall decrease as v increase. The total resultant force shall decrease throughout time. 6. Acceleration will decrease.