A force acting on an object moving along the x axis is given by Fx = (14x? 3.0x2) 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. +12 J
B. +28 J
C. +40 J
D. +42 J
E. ?28 J
Answer: A
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