A cat rides a merry-go-round turning with uniform circular motio

A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (3.00 m/s) i + (4.00 m/s) j, measured on a horizontal xy coordinate system. At t2 = 5.00 s, its velocity is v2 = (–3.00 m/s) i + (– 4.00 m/s) j . What are?

(a) The magnitude of the cat's centripetal acceleration and

(b) The cat's average acceleration during the time interval t2 – t1, which is less than one period?

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