1. The problem statement, all variables and given/known data Two cars drive around in circles at constant speeds. Car B's circle is twice as large as car A's, but its centripetal acceleration is three times as large. How many times faster is car B driving than car A? 2. Relevant equations I'm trying to use a=(v^2/r) for centripetal acceleration. 3. The attempt at a solution I don't really know where to start on this one. Per our answer key, the answer should be: 2.45 times faster.