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An object moving along the x axis is acted upon by a forse `F_(x)` that varies with position as shown . How much work is done by this force as the moves from `x=2m` to `x = 8 am`? A. `-10 J`B. `+10 J`C. `+30 J`D. `-30 J` |
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Answer» [3] W`=(1)/(2)xx20xx4-(1)/(2)xx10xx2` `=30J` |
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