The 2-Mg car increases its speed uniformly from rest to 25 m/s in 30 s up the inclined roa...

The 2-Mg car increases its speed uniformly from rest to 25 m/s in 30 s up the inclined road. Determine the maximum power that must be supplied by the engine, which operates with an efficiency of ε = 0.8. Also, find the average power supplied by the engine.