1. A force acting on an object moving along the x axis is given by \( F_x = (14x - 3.0x^2) \) N, where x is in m. How much work is done by this force as the object moves from x = -1 m to x = +2 m?
(A)+12J
(B)+28J
(C)+40J
(D)+42J
(E)-28J
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統計: 尚無統計資料
統計: 尚無統計資料