The velocity of a particle is for

MATHEMATICS · Single correct · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

The velocity of a particle is v(t)=⟨t2, t⟩\mathbf v(t)=\langle t^{2},\, t\rangle for −1≤t≤2-1\le t\le 2. At which of the following times is the particle’s speed decreasing? (a) t=1t=1 (b) t=−1t=-1 (c) t=0t=0 (d) t=2t=2

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