A small object with mass 3.10 kg moves counterclockwise with
constant speed 5.20 m/s in a circle of radius 4.50 m centered at
the origin. It starts at the point with position vector (4.50 + 0 )
m. Then it undergoes an angular displacement of 8.50 rad.
(e) What is its acceleration? (i + j (m/s^2))
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