( ( ( ( Newton 's ) ( Second Law ) ) ( of Motion ) ) ( ( describes ( ( the relationship ) ( between ( force ( , ( ( mass and ) acceleration ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (NNP Newton) (POS 's)) (NNP Second) (NNP Law)) (PP (IN of) (NP (NNP Motion)))) (VP (VBZ describes) (NP (NP (DT the) (NN relationship)) (PP (IN between) (NP (NN force) (, ,) (NN mass) (CC and) (NN acceleration))))) (. .)))
Newton's Second Law of Motion describes the relationship between force, mass and acceleration.
(ROOT (S (S (NP (NP (NP (NNP Newton) (POS 's)) (JJ second) (NN law)) (PP (IN of) (NP (NN motion)))) (VP (VBZ is) (NP (QP (JJR more) (IN than) (DT a)) (NN definition)))) (: ;) (S (NP (PRP it)) (VP (VBZ is) (NP (NP (DT a) (NN relationship)) (PP (IN among) (NP (NP (NN acceleration)) (, ,) (NP (NN force)) (, ,) (CC and) (NP (NN mass))))))) (. .)))
Newton’s second law of motion is more than a definition; it is a relationship among acceleration, force, and mass.