[填空题]
A 1200-kg car has a maximum powfc8bb ; y:i6c:q4t 8fc3nk gqier output of 120 hp. How steep a hillsaph77)jwuwbivif r ,bi08,0 can it climb at a constant s8rbbivsj0h upi0,ww f,i a77) peed of 75km/h if the frictional forces add up to 650 N? $^{\circ} $
