-All the modes, in which any given body is affected, follow from the nature of the body affected, and also from the nature of the affecting body (by Ax. i., after the Coroll.
Ezen gorputz bat hunkitzen duten modu guztiak, hunkia den gorputzaren izaerari eta, aldi berean, jotzen duen gorputzaren izaerari darraizkie (3. Lem. Korol. ond.