Q. A body executing uniform circular motion has at any instant its velocity vector and acceleration vector
A) along the same direction
B) in opposite direction
C) normal to each other
D) not related to each other
Explanation
(c) An object moving in uniform circular motion is moving around the perimeter of the circle with a constant speed. While the speed of object is constant, its velocity is changing. Velocity being a vector quantity has a constant magnitude but a changing direction. The direction is always directed tangent line is always pointing in a new direction. Also when it is moving in circular motion towards the centre, hence acceleration is perpendicular to velocity.
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.