When a body moves in a circle, the angle between its linear velocity and angular velocity is always?
Correct answer: C. 90°
- A. 180°
- B. 0°
- C. 90°
- D. 45°
Explanation
The angle between the linear velocity and the angular velocity of a body moving in a circle is 90°.
This question appeared on the ETEA MDCAT 2010 paper, which you can sit online with every answer explained.
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About Angular and Linear Quantities
Rotational motion relates angular displacement, angular velocity and angular acceleration to linear displacement, tangential velocity and tangential acceleration through the radius. Questions use radians, v equals r omega and tangential acceleration, while distinguishing tangential velocity from centripetal acceleration and angular quantities from their linear counterparts.
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