When a body moves in a circle, the angle between its linear velocity v and angular velocity ω is:
Correct answer: C. 90°
- A. 0°
- B. 45°
- C. 90°
- D. 180°
Explanation
In circular motion, the linear velocity v of a body is always tangent to the circle at any point, while the angular velocity ω is directed along the axis of rotation, which is perpendicular to the plane of motion. The angle between the linear velocity vector v and the angular velocity vector ω is always 90 degrees. This is a fundamental relationship in circular motion and holds true at any point along the circular path. Therefore, the correct answer is 90°. Options A, B, and D are incorrect because the angle between the linear velocity and angular velocity vectors is always 90 degrees in circular motion.
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