英语翻译
thegeneralprinciplesofdynamicsareruleswhichdemonstratearelationshipbetweenthemotionsofbodiesandtheforceswhichproducethosemotions,basedinlargepartontheworkofhispredecessors.SirIsaacNewtondeducedthreelawsofdynamicswhichhepublishedin1687inhisfamousPrincipia.
PriortoNewton,Aristotlehadestablishedthatthenaturalstateofabodywasarest,andthatunlessaforceacteduponittomaintainmotion,amovingbodywouldcometorest.
Galileohadsucceededincorrectlydescribingthebehavioroffallingobjectsandinrecordingthatnoforcewasrequiredtomaintaininmotion.Henotedthattheeffectofforcewastochangemotion.Huygensrecognizedthatachangeinthedirectionofthemotioninvolvedacceleration,justasdidachangeinspeed.Keplerdeducedthelawsdescribingthemotionoftheplanetsaroundthesun.ItwasprimarilyfromGalileoandKeplerthatNewtonborrowed