The direction of angular velocity ω with respect to position vector r is:
Correct answer: B. Perpendicular to it
- A. Parallel to it
- B. Perpendicular to it
- C. At an angle of 180o
- D. At an angle of 270o
Explanation
Explanation: The direction of the angular velocity is along the axis of rotation. For an object rotating clockwise, the angular velocity points away from you along the axis of rotation. For an object rotating counterclockwise, the angular velocity points toward you along the axis of rotation thus it can be said the direction is perpendicular or at 90 degrees.
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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