Calculus

What is the velocity vector for a moving particle with a position vector r of t equals the components 2 over t, the natural log of t ? (10 points)
A) components 2, e to the t power
B) components 0, t times the natural log of t
C) components negative 2 times t, 1 over t
D) components 0, 1 over t

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  1. r(t) = <2/t, lnt>
    v(t) = dr/dt = <-2/t^2, 1/t>

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    oobleck

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