10 The position of a particle moving in the xy-plane at time t is r(t) =...
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10 The position of a particle moving in the xy-plane at time t is r(t) = (cos 21) i + (sin) j. What is the particle's speed at 1 =s ? -2i+ 2 -221. O 1.2929 4 10 The position of a particle moving in the xy-plane at time t is r(t) = (cos 21) i + (sin) j. What is the particle's speed at 1 =s ? -2i+ 2 -221. O 1.2929 4
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