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A particle moves along the x -axis according to the equation x ( t ) = 2.2 4.3 t 2 m. What are the velocity

A particle moves along the x-axis according to the equation x(t) = 2.2 4.3t² m.

What are the velocity (in m/s) and acceleration (in m/s²) at

t = 3.2 s

and

t = 6.2 s?

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