問題詳情
32. A force acting on an object moving along the x axis is given by Fx = (14x − 3x2) N, where x is inm. How much work is done by this force as the object moves from x = −1 m to x = +2 m?
(A) +12 J
(B) +28 J
(C) +40 J
(D) +42 J
(E) −28 J
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增