The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 1 for r(t) = (9t - 3t4)i + (2 - t)j + (7t2 - 2t)k
A. a(1) = -36i - j + 14k
B. a(1) = 36i + 14k
C. a(1) = -9i + 14k
D. a(1) = -36i + 14k
Answer: D
Mathematics
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