| 1. | Given a reference frame, at most one of them will be coefficient-free.
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| 2. | This is the reference frame in which the laboratory is at rest.
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| 3. | This is because the reference frame, not the vector, was rotated forwards.
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| 4. | The Eulerian reference frame, in contrast, does not move with the fluid.
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| 5. | It requires a reference frame, certainly, but all of physics requires that.
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| 6. | From the reference frame of the vehicle, the wind has stopped moving.
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| 7. | This approach is sometimes referred to as using a Lagrangian reference frame.
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| 8. | There's no net work being done with respect to any reference frame.
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| 9. | The reference frame is fixed to the stationary center of the disk.
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| 10. | :The article is about fictitious forces acting in a rotating reference frame.
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