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Homework Statement
The vector position of a 4.00 g particle moving in the xy plane varies in time according to
where t is in seconds and
Determine the acceleration of the center of mass at t = 2.40.
Homework Equations
The Attempt at a Solution
A=4i+4j
i took the second derivative of position to give me acceleration. This resulted in 4i+4j which is wrong[/B]
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