Two Cars Are Travelling Around Identical Circular Racetracks

question 34

Multiple Choice

Two cars are travelling 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 travelled farther than car A since starting.