( ( ( ( Third Law ) ( of Motion ) ) ( ( For ( every force ) ) ( applied ( to ( a body ) ) ) ) ) ( , ( there ( ( is ( ( an ( ( ( equal and ) oppositely ) ( directed force ) ) ) ( exerted ( in response ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (NP (NNP Third) (NNP Law)) (PP (IN of) (NP (NNP Motion)))) (PP (IN For) (NP (DT every) (NN force))) (VP (VBD applied) (PP (TO to) (NP (DT a) (NN body))))) (, ,) (NP (EX there)) (VP (VBZ is) (NP (NP (DT an) (ADJP (JJ equal) (CC and) (JJ oppositely)) (JJ directed) (NN force)) (VP (VBN exerted) (PP (IN in) (NP (NN response)))))) (. .)))
Third Law of Motion For every force applied to a body, there is an equal and oppositely directed force exerted in response.
(ROOT (S (NP (NNP Work)) (VP (VBZ is) (VP (VBN done) (SBAR (RB only) (IN if) (S (NP (DT a) (NN force)) (VP (VBZ is) (VP (VBN exerted) (PP (IN in) (NP (NP (DT the) (NN direction)) (PP (IN of) (NP (NN motion))))))))))) (. .)))