The velocity of an object as a function of time is given by v = (12.5t − 7.2t2) + (4.3t3) .What is its acceleration as a function of time?
A) a = (12.5 − 14.4t) + (12.9t2)
B) a = (−7.2) + (4.3t)
C) a = (5.3t) + (12.9t2)
D) a = (−7.2) + (8.6t)
E) a = (−14.4t) + (4.3t2)
Correct Answer:
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