Two cars are traveling around identical circular racetracks. Car A travels at a constant speed of 20 m/s. Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s. When car B has the same (tangential) velocity as car A, it is always true that:
A. it is passing car A.
B. it has the same linear (tangential) acceleration as car A.
C. it has the same centripetal acceleration as car A.
D. it has the same total acceleration as car A.
E. it has traveled farther than car A since starting.
Answer: C
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