牛顿力学 niúdùnlìxué Newtonian mechanics Origin Definitions Defs Strokes Stroke Words Sentences Sents 牛顿 牛頓 niúdùn Newton Sir Isaac Newton (1642–1727), the British mathematician and physicist who discovered gravity and the laws of motion.力学 力學 lìxué mechanics branch of physics concerned with the motion of objects and the forces acting upon them