Question

Although the car can maintain a constant speed along the circular track, it cannot maintain a constant velocity. Why?

Answer 1

Answer:

Velocity is a vector quantity. (It has magnitude as well as direction)

While travelling around a circle, it’s direction is always changing, therefore it’s displacement will also change.

Thus, even if the object has constant speed, it cannot have constant velocity (around a circle)

Answer 2

Because the direction of motion in a car is constant i.e the displacement takes place in a particular direction. While in speed , distance covered by the car can be in a number of directions
So in a circular path, the direction of the car keeps changing at every point and hence displacement does not take place
(Displacement only takes place in a particular direction)