A car is going around a racetrack at constant speed.The curves around the track have different radii.In which turn is the magnitude of the car's acceleration the greatest?
A)It is the greatest in the turn with the greatest radius.
B)It is the greatest in the turn with the smallest radius.
C)The acceleration is zero everywhere because of the constant speed.
D)More information is needed to determine the answer.

Question

Quizplus · Accepted Answer

The magnitude of acceleration is directly proportional to the radius of curvature. Thus, the turn with the smallest radius will have the greatest acceleration.

A Car Is Going Around a Racetrack at Constant Speed