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An object is moving along the `x`axis with postion as a function of time given by `x =x(t)`. Point `O` is at `x = 0`. Object is definitely moving towardr `O` whenA. `dx//dt lt0`B. `dx//dt gt 0`C. `dx^(2)//dt^(2) lt 0`D. `dx^(2)//dt^(2) gt 0` |
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Answer» Correct Answer - C For particle to move towards orgin `x` and `v` must be of opposite sign. `(d(X^(2)))/(dt) = 2x (dx)/(dt) lt 0` |
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