Posted by **mitch** on Thursday, August 23, 2012 at 9:26pm.

A particle moves along the y axis according to y(t)=(3.5 m/s^2)t^2 - (9.0 m/s)t + 5.0 m.

(a) What is the particle's velocity as a function of time?

(b) What is the particle's acceleration at t=2.0 s?

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