Which car is accelerating?
a) a car that is unmoving
b) a car that rounds a curve at a constant speed
c) a car that travels in straight line at a constant speed
d) a car that is set to a constant speed of 60 miles per hour
me need to pass

B.

We know that the definition of acceleration is the rate of change of velocity. Moreover, velocity is a vector quantity, so it has both magnitude and direction. While moving in a circle, the direction of the car's velocity is constantly changing. This change means that the velocity of the car is changing. Because the velocity is changing, the car is accelerating, despite the magnitude of the velocity remaining the same.

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