Physics
posted by Rachel .
A centripetalacceleration addict rides in uniform circular motion with period T = 4.30 s and radius r = 3.00 m. At one instant his acceleration is a = (4.00 m/s2)i + (5.00 m/s2)j . At that instant, what are the following values?
(a) v ยท a
(b) r x a

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