Problem is to solve for max speed of an electric vehicle, given is the HP of motor (3 total), and the wind+rolling resistance of the vehicle at 60mph. Wind resistance should be regarded as a constant for this problem. Also given is EV weight with cargo and rider Motor HP = 5, 10 , 20 Resistance is constant @ 165lbs. EV weight = 2250lbs. Solve for the given 3 hp varables.