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A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x =
1.9t²-3.1t and y-6.1t2-t3/1.2. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors
make with the x-axis when t - 4.3 s.
Answers: When t = 4.3 s,
V=
a-
i
mm/s, ex-
mm/s², 0,-
i

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