問題詳情

36. Which of the following values is closest to the minimum power in hp required fora 1000-kg car that is climbing a 5.7° hill at a steady 72 km/h? Assume that theaverage drag force on the car at that speed is 500 N throughout.(g = 10 m/s2 , 1 hp = 750 W)
(A) 5
(B) 20
(D) 100
(E) 300
(C) 40

參考答案

答案:C
難度:計算中-1
書單:沒有書單,新增