Since acceleration represents the rate of chage of velocity, how is it possible

Question

Since acceleration represents the rate of chage of velocity, how is it possible for an object moving in a circle to be accelerating if its speed never changes? Because acceleration is defined differently (in terms of vectors) in the case of circular motion Because the direction of the velocity is changing, even if its magnitude is not Because each of the components of velocity are changing, even though the total velocity is not Because the speed alternates between positive and negative as the object moves around the circle

Explanation / Answer

acceleration is rate of change of velocity

velocity is speed with direction

In circular motion, even when speed is not changing, its direction changes changes

So, velocity is changing and this give rise to acceleration known as centrepetal acceleration

Answer: option 2

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