Question: In Problem a-b, find the velocity v, acceleration a, and speed s at the indicated time t = t1. a. r(t) = 4ti + 5(t2

In Problem a-b, find the velocity v, acceleration a, and speed s at the indicated time t = t1.
a. r(t) = 4ti + 5(t2 - 1)j + 2tk; t1 = 1
b. r(t) = ti + (t - 1)2j + (t - 3)3k; t1 = 0

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