( ( ( ( ( ( ( The tendency ) ( of ( objects ( at rest ) ) ) ) ( to ( remain ( at rest ) ) ) ) , ) and ) ( ( objects ( in ( constant motion ) ) ) ( to ( ( ( continue ( in ( constant motion ) ) ) , ) ( in ( ( the absence ) ( of ( applied forces ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN tendency)) (PP (IN of) (NP (NP (NNS objects)) (PP (IN at) (NP (NN rest)))))) (VP (TO to) (VP (VB remain) (PP (IN at) (NP (NN rest)))))) (, ,) (CC and) (S (NP (NP (NNS objects)) (PP (IN in) (NP (JJ constant) (NN motion)))) (VP (TO to) (VP (VB continue) (PP (IN in) (NP (JJ constant) (NN motion))) (, ,) (PP (IN in) (NP (NP (DT the) (NN absence)) (PP (IN of) (NP (JJ applied) (NNS forces)))))))) (. .)))
The tendency of objects at rest to remain at rest, and objects in constant motion to continue in constant motion, in the absence of applied forces.
(ROOT (S (SBAR (IN If) (S (NP (DT no) (JJ unbalanced) (NN force)) (VP (VBZ acts) (PP (IN on) (NP (DT an) (NN object)))))) (NP (DT the) (NN object)) (VP (VBZ remains) (PP (PP (IN at) (NP (JJ constant) (NN velocity))) (CC or) (PP (IN at) (NP (NN rest))))) (. .)))