Q. An object is moving in a circle of radius $100\ m$ with a constant speed of $31.4\ m/s$. What is its average speed for one complete revolution
A) Zero
B) $31.4\ m/s$
C) $3.14\ m/s$
D) $\sqrt{2} \times 31.4\ m/s$
Explanation
(b) As the speed is constant throughout the circular motion therefore its average speed is equal to instantaneous speed
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.