Question: If an object is moving in a circular path with a radius of 10 m and completes one revolution in 20 seconds, what is its speed?
Options:
Correct Answer: 3.14 m/s
Solution:
Circumference = 2πr = 2π(10 m) = 62.83 m. Speed = distance/time = 62.83 m / 20 s = 3.14 m/s.