Exam-style question
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An object completes a full rotation of 360 degrees in 2 seconds. What is its angular velocity in radians per second?.
- A.3.14 rad/s
- B.6.28 rad/s
- C.1.57 rad/s
- D.12.56 rad/s
Model answer
What a good answer should say
- 6.28 rad/s
Explanation
Why this works
To find angular velocity (ω), we use the formula ω = θ / t. Here, θ = 360 degrees = 2π radians, and t = 2 seconds.
Substituting gives ω = 2π / 2 = π rad/s, which is approximately 6.28 rad/s.
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