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- Net (vector) force on a body causes accelerationof acceleration of its center of mass
- External force changes the momentum of a system, even if they act on only one part of it.
- Non-conservative forces change the energy of a system
- Forces acting around an axis (torques) change the angular momentum about that axis.
It is also important to note whether the force acts over a time interval, in which case it imparts momentum or whether it acts through a distance, in which case it does work.ω
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