vegavattvāc ca so 'vaśyaṃ yāvadvegaṃ pratiṣṭhate // tasyātmāvayavānāṃ ca stimitena ca vāyunā / saṃyogā viprayogāś ca jāyante gamanād dhruvam //
And due to having velocity, it necessarily continues as long as [its] momentum [lasts]. And due to [its] movement, conjunctions and disjunctions of its constituent parts with the stationary air certainly arise.