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Instantaneous acceleration is best described as
Athe ratio of displacement to time
Bthe derivative of position with respect to time
Cthe value approached by average acceleration as the time interval tends to zero
Dalways equal to zero when velocity is nonzero
Answer & Solution
Correct answer: C. the value approached by average acceleration as the time interval tends to zero
Instantaneous acceleration is defined as the limiting value of average acceleration as $\Delta t\to 0$. Equivalently, $a(t)=\dfrac{dv}{dt}$.
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