Q- A cat rides a merry-to-round turning in circular motion with uniform speed. At time t₁ = 2.00 s, the cat’s velocity (in m/s) is V₁=3.0 i + 4.0 j, measured on a horizontal x-y coordinate system. At t₂ = 5.00 s its velocity is V₂= (-3.0) i + (-4.0) j. What are the

(a) magnitude of the cat’s centripetal acceleration, and 

(b) the cat’s average acceleration during the time interval t₂-t₁?

Solution: