alleryStart learning →What defines uniform circular motion?
AAn object travelling any path at a constant velocity
BAn object travelling a circular path at a constant speed
CAn object travelling a circular path while speeding up
DAn object travelling a straight path at a constant speed
Answer & Solution
Correct answer: B. An object travelling a circular path at a constant speed
1. Uniform circular motion keeps the speed fixed while the object moves in a circle.
2. Its velocity is still changing throughout, because the direction keeps turning.
3. That is why an object in uniform circular motion is still accelerating even at constant speed.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.2 Uniform Circular Motion_
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